Recent puzzles under tag mathematical

0 votes

Find the sum of all whole numbers whose digits are strictly increasing?

posted Jun 16, 2018 by anonymous

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P can do a work in 20 days, Q can do the same in 12 days and R 16 days. Q and R start the work and leave after 6 days...

posted Jun 16, 2018 by anonymous

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What was the average number of runs in the last 30 overs only?

posted Jun 16, 2018 by Mishthy Mukherjee

+2 votes

Whats the output of below equation? (10^0 + 10^1 *10^2 - 10^0)/10 = ?

posted Jun 16, 2018 by Yogeshwar Thakur

+1 vote

In how many ways by using number 1 to 7 and + operator, you can make the number as 100?

posted Jun 16, 2018 by Divya Bharti

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What is the value of X?

posted Jun 15, 2018 by Aman

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A prime number less than 70 is randomly picked, what is probability that one of its digit will be 7?

posted Jun 12, 2018 by Rajni

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Ahaan bought a mobile with 25% discount on the labeled price. He sold the..........At what price did he buy the mobile?

posted Jun 11, 2018 by Varun Kumar

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P is a point inside triangle ABC. Lines are drawn through P parallel to the sides of the triangle....

posted Jun 7, 2018 by anonymous

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If a^2 + b^2 + C^2 = 9 then what is the max value of 2(a + b + c) - abc where a,b,c are real numbers?

posted Jun 7, 2018 by anonymous

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Surya bought some computer games at a rate of six for $40, and sold them at a rate...........how many games did he sell?

posted Jun 7, 2018 by Pankaj Deshmukh

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How many factors of ********** are even numbers?

posted Jun 7, 2018 by anonymous

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What does 2 squared, plus the circumference of a circle, minus twice the product of the circle's radius and pi..........

posted Jun 6, 2018 by Sidharth Malhotra

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In 2017, A is 9 years older than B who is five times as old as C. The total of the ages of A, B and C is 97 years....

posted Jun 4, 2018 by anonymous

+1 vote

If a,b and c are positive real numbers, such that (1+a)(1+b)(1+c) = 8 then the maximum value of a.b.c

posted May 31, 2018 by Varuna Magar

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If first 17 positive integers are rearranged into a sequence such that sum of any two adjacent is a perfect square...

posted May 31, 2018 by anonymous

+1 vote

Read the following statement and fill in the blanks?

posted May 30, 2018 by Reinyii

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Two vessels A and B containing 25 litres each of milk and water respectively. 5 litres of milk from A is poured into B..

posted May 30, 2018 by Varuna Magar

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Train A, travelling at 84 kmph, overtook train B, traveling in the same direction, in 10 seconds....

posted May 30, 2018 by Varuna Magar

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some money is to be distributed among X, Y and Z in ratio 3 : 1 : 5. Difference between Y’s and Z’s share is Rs. 3600...

posted May 29, 2018 by anonymous

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What is the dividend of 22 divided by 7?

posted May 28, 2018 by Amrita

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Trapezoid as shown has two parallel sides with length 5 and 15 & two diagonals with length 12 and 16. What is its area?

posted May 28, 2018 by anonymous

+1 vote

A circle of radius 1 is tangent to the parabola y=x^2 as shown. Find the gray area between the circle and the parabola?

posted May 25, 2018 by anonymous

+1 vote

Sum of the ages of a boy and his father is 49 years. Before 11 years Father's age was 8 times the age of the boy...

posted May 25, 2018 by Mohammad

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As shown, a rectangle is partitioned into four triangles. Areas of two right triangles are 30 and 50....

posted May 24, 2018 by Rahul Chandel

+1 vote

The temperature on a unit sphere x^2 + y^2 + z^2 = 1, is given by a temperature distribution T(x,y,z) = 50.(xy + yz)...

posted May 24, 2018 by Rahul Chandel

+1 vote

Two numbers are in the ratio 3 : 4. If their L.C.M. is 192. what is product of the numbers?

posted May 24, 2018 by Rahul Chandel

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If log 27 = 1.935, then what is the value of log 9

posted May 23, 2018 by anonymous

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What would be the sum of all positive integers n such that 20n and 5n+275 both are perfect squares?

posted May 21, 2018 by Samardeep Acharya

+1 vote

If sin x + sin y + sin z = 0 and cos x + cos y + cos z = 0 then what is the value of cos (x - y) = ?

posted May 18, 2018 by Rahul Vaidya

+1 vote

20 workers start working on a project of packing consignments and need exactly 5 hours to pack one consignment....

posted May 18, 2018 by Rahul Vaidya

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Find the minimum surface area for a polycube composed of 2000 unit cubes?

posted May 17, 2018 by anonymous

–1 vote

What is the area of the blue region in the following image where all the numbered quadrilateral are square?

posted May 17, 2018 by Atif

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If A != B and A^n + B^n is an integer for all positive integers n, must A and B both be the integers? [MCQ]

posted May 17, 2018 by Mohammad

+1 vote

If a^b = 1; b^c = 2 and c^a = 3 and a,b,c are rational number then what is a + b + c = ?

posted May 16, 2018 by anonymous

+1 vote

A man borrows Rs 6000 at 10% compound rate annually. He pays back Rs 2000 each year to clear his debt....

posted May 16, 2018 by anonymous

+1 vote

Two pipes A and B can separately fill a cistern in 60 and 75 mins respectively, there is a third pipe in the bottom...

posted May 16, 2018 by Mishthy Mukherjee

+1 vote

Prove A + ĀB = A +B using theorems and laws of Boolean Algebra?

posted May 14, 2018 by anonymous

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How many kg of salt at 25 paise per kg must be mixed with 50 kg of salt costing 42 paise per kg so that...

posted May 12, 2018 by anonymous

+1 vote

What is the maximum volume of a cone inscribed in a sphere of radius 6?

posted May 10, 2018 by anonymous

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3 men and 3 women are to sit at a round table. In how many different ways can they sit so that no 2 women sit together?

posted May 10, 2018 by anonymous

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Six students around a circular table. Num of ways they can be seated if two particular persons are next to each other?

posted May 10, 2018 by Yogeshwar Thakur

+1 vote

Find the number of ways in which the letters of the word ARRANGE can be arranged such that both R do not come together.

posted May 10, 2018 by anonymous

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Four right triangles with distinct integer hypotenuses are put together to form a quadrilateral, as shown in image...

posted May 9, 2018 by Upma

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A prime number less than 60 is randomly picked, what is probability that one of its digit will be 3?

posted May 9, 2018 by anonymous

+1 vote

A unit circle is divided into 12 congruent regions, as shown. What is the perimeter of one of these regions?

posted May 8, 2018 by anonymous

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Which number has 2 digits, it is prime and it is 2 more than a square number?

posted May 7, 2018 by anonymous

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Unit sphere is on a flat plane in rain. What is the length of largest cube that can hide underneath it and not get wet?

posted May 3, 2018 by anonymous

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What is the domain of the function log(log(sinx))?

posted May 2, 2018 by anonymous

+1 vote

6 men & 8 women can do a work in 10 days, 4 men & 7 women can do it in 12 days, how many days will 4 men and 12 women...

posted May 2, 2018 by anonymous