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Find the number in place of question mark.

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3 (36) 9
4 (?) 5
6 (80) 4

Options=- 81. -36. -42. -41.

posted Mar 23, 2018 by anonymous

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42 narendra rajput

1 Answer

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42


(3^2+9)*2=36
(4^2+5)*2=42
(6^2+4)*2=80

answer Jun 28, 2018 by Hanifa Mammadov
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