√3969/? – 19 = 107

(a) 1/4
(b) 1/9
(c) 1/16
(d) 1/25

Anurag Mishra Professor Asked on 8th March 2016 in Maths.
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1 Answer(s)

Answer: (a) 1/4 

Solution:-
√3969/? – 19 = 107
√3969/? = 107 + 19
√3090/? = 126
63/√? = 126
√? = 63/126
√? = 1/2
Square on both side,
? = 1/4

Then, the value of ? is 1/4.

Hence, the correct answer is option (a) 1/4.

Anurag Mishra Professor Answered on 8th March 2016.
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