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1. What will come in place of the question mark (?) in each of the following questions ?$$7^{2}\times3^{2}=?^{2}-135$$
(A): 25
(B): 35
(C): 28
(D): 30
(E): 24
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By: anil on 05 May 2019 03.15 am
Expression : $$7^{2} imes3^{2}=?^{2}-135$$ => $$49 imes 9 = (x)^2 - 135$$ => $$441 = (x)^2 - 135$$ => $$(x)^2 = 441 + 135 = 576$$ => $$x = sqrt{576} = 24$$
By: anil on 05 May 2019 03.15 am
Expression : $$7^{2} imes3^{2}=?^{2}-135$$ => $$49 imes 9 = (x)^2 - 135$$ => $$441 = (x)^2 - 135$$ => $$(x)^2 = 441 + 135 = 576$$ => $$x = sqrt{576} = 24$$
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SBI Clerk 08 Feb 2015
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