Recent puzzles under tag mathematical

0 votes

Find a five-digit number which has its digits reversed when it is multiplied by 9?

posted Jun 20, 2017 by anonymous

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The marked price of a shirt is Rs.1500. A shopkeeper offers 15% discount and again offers 20% discount on new price...

posted Jun 20, 2017 by anonymous

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In how many ways the corners of a square be colored using four colors?

posted Jun 17, 2017 by anonymous

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In how many ways we can wear three rings in the four fingers?

posted Jun 17, 2017 by anonymous

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Let us say there are two natural numbers "L" and "R". We performed eight operations on these.........What is wrong here?

posted Jun 17, 2017 by Madhavi Latha

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Two numbers are randomly picked from list 9, 10, 11, 12, 13, ....32. What is the probability being both as prime number?

posted Jun 16, 2017 by anonymous

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A family, made up of 2 parents with children, has an average age of 20. If you.........How many kids are in the family?

posted Jun 15, 2017 by Kuldeep Apte

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I have a quadrilateral with perimeter 4 and area 1. Find the maximum value of the product of its diagonal lengths.

posted Jun 13, 2017 by anonymous

+1 vote

N has precisely 10 positive divisors. N has precisely 15 positive divisors. N has precisely 20 positive divisors....

posted Jun 13, 2017 by anonymous

+3 votes

Dmitri was working on a mixture whose weight comprise of 90% liquid and 10% solid. The total weight of the.............

posted Jun 13, 2017 by Yogeshwar Thakur

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A dad offered to pay her daughter Rs 5 for every correct answer on her maths test. Her daughter said she would pay......

posted Jun 13, 2017 by Rahul Vaidya

+1 vote

P, Q, R can do a work in 12, 8 and 6 days respectively. Q and R start the work and leave after 2 days...

posted Jun 12, 2017 by anonymous

+1 vote

How many ways can n books be placed on k distinguishable shelves?

posted Jun 11, 2017 by anonymous

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A bag contains Red and Black Balls. Two balls are drawn and probability that both the balls drawn are red is 1/2...

posted Jun 11, 2017 by anonymous

+1 vote

This is a mathematical and number puzzle if you have mind solve it

posted Jun 11, 2017 by anonymous

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What 3 digit number will give you the same answer whether you subtract 5 or divide by 5?

posted Jun 10, 2017 by Divya Joshna

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Find sum of all the positive integral values of x and y such that 2^x + 3^y is a perfect square?

posted Jun 9, 2017 by anonymous

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Find the number of distinct fractions a/b, where both a & b are integers with 0<=a<=b<=50 and gcd(a,b) = 1?

posted Jun 9, 2017 by anonymous

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What would be the answer of the following equation?

posted Jun 8, 2017 by anonymous

+2 votes

What is full of holes but still holds water?

posted Jun 8, 2017 by Ambuj Chaudhary

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If 1+2=3, 2+3=16 and 3+4=45 then 4+5=??

posted Jun 7, 2017 by anonymous

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If 8638 + 7542 = 1215 & 5589 + 2468 = 4331 Then; 1357 + 1919 = ????

posted Jun 6, 2017 by Ankur Athari

+1 vote

Present ages of two persons differ by 35 years. 3 years later, elder one would be 4.5 times as old as younger one....

posted Jun 5, 2017 by anonymous

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Sarah asked his grandmother: “How old are you?” She replied: “I have 6 children and.........How old is Sarah’s grandma?

posted Jun 1, 2017 by Parampreet Kaur

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If man covers 250km by train and rest by bus it takes him 4 hours but if he travels 130km by train and rest by bus...

posted Jun 1, 2017 by anonymous

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A box contains 4 red, 6 green & 8 black balls. 3 balls are drawn, find probability of all balls are of different color?

posted Jun 1, 2017 by anonymous

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Using any combination of +, x, -, / and all of the digits 2, 3, 6 and 8 once only, make the number 36?

posted Jun 1, 2017 by anonymous

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Which number will replace a, b, c, d in the image below ?

posted May 31, 2017 by Rajesh Jk

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Can you identify the numbers missing in the Boxes ?

posted May 31, 2017 by Rajesh Jk

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If 2+3+4=27, 3+4+5=56, 5+6+7=168 and 6+7+8=259 then 1+2+4=??

posted May 31, 2017 by Deepak Jangra

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If 96 mangoes are bought for Rs. 1440 and sold at Rs. 72 per half dozen. What is the percentage of profit or loss?

posted May 31, 2017 by anonymous

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Given that A is a matrix of order 5x3 and B is a matrix of order 3x5, then what is the value of |C| if A x B = C?

posted May 29, 2017 by anonymous

+3 votes

How many of each coin is there and what are their values?

posted May 29, 2017 by Mishthy Mukherjee

+1 vote

Probability of landing a 6 in an unfair Dice.

posted May 29, 2017 by Tejas Naik

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In triangle ABC, D and E are points on sides AB and AC respectively such that AD × EC = AE × DB. Prove that DE || BC?

posted May 28, 2017 by anonymous

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How many max number of mixed double tennis can be played among four couple if husband & wife are not allowed in a team?

posted May 27, 2017 by anonymous

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Consider the regular 9-gon as shown in figure, Which area is larger: the grey or the white?

posted May 26, 2017 by Chahat Sharma

–1 vote

There are 12 boys and 9 girls, if three students are selected at random, find probability of 1 girl & 2 boys selection?

posted May 26, 2017 by anonymous

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Boatman goes 4km against current in 2hr and 7.5km along current in 90min. How long he take for 7 km in stationary water?

posted May 25, 2017 by anonymous

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N has 3 prime factors, N^2 has 7!! positive divisors, N^3 has 10!!! positive divisors, __ has 13!!!! positive divisors?

posted May 24, 2017 by Pushpak Chauhan

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How many different paths can the grasshopper take to reach his destination?

posted May 24, 2017 by anonymous

+1 vote

What's the probability that A wins the duel?

posted May 24, 2017 by anonymous

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Can you solve the number puzzle by replacing the question mark with a number ?

posted May 22, 2017 by Richa Patil

+1 vote

x and y are 2 digit numbers where y is obtained by reversing x. If x^2 - y^2 = m^2 then find the value of x+y+m?

posted May 22, 2017 by anonymous

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A cylinder has a total surface area of 6Pi. What is its maximum possible volume?

posted May 22, 2017 by anonymous

+1 vote

Can you solve the below maths equation and find the value of cup?

posted May 22, 2017 by Naziya Raza Khan

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When an item is sold for Rs. 26,100, the owner loses 13%. At what price should that plot be sold to get a gain of 13.5%?

posted May 22, 2017 by anonymous

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Can you this puzzle of balancing load in the Image ?

posted May 20, 2017 by Ranjith Havaldar

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If 4^(n + 4) - 4^(n + 2) = 960, What is the value of n?

posted May 19, 2017 by anonymous

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11 spheres of radius 3 m, 9 cylinder of radius 4 m, height 5 m and 13 cones of radius 2 m, height 4 m are melted...

posted May 18, 2017 by anonymous