Question

(Q.36-45) What approximate value will come in place of question mark (?) in the given equations?

`sqrt(1279.98+sqrt(243.97+sqrt(140.22+sqrt(6.875+sqrt(76.09+sqrt(24.97)))))) = ? `

A 16 Correct Answer Incorrect Answer
B 74 Correct Answer Incorrect Answer
C 24 Correct Answer Incorrect Answer
D 36 Correct Answer Incorrect Answer
E 26 Correct Answer Incorrect Answer

Solution

Here the terms of the given expression can also be rounded off as`=sqrt(1280+sqrt(244+sqrt(140+sqrt(7+sqrt(76+sqrt25)))))` `=sqrt(1280+sqrt(244+sqrt(140+sqrt(7+sqrt(76+5` `=sqrt(1280+sqrt(244+sqrt(140+sqrt(7+sqrt(81)))))` `=sqrt(1280+sqrt(244+sqrt(140+sqrt(7+9))))` `=sqrt(1280+sqrt(244+sqrt(140+sqrt(16))))` `=sqrt(1280+sqrt(244+sqrt(140+4)))` `=sqrt(1280+sqrt(244+sqrt(144)))` `=sqrt(1280+sqrt(244+12))` `=sqrt(1280+sqrt(256))` `=sqrt(1280+16)` `=sqrt1296=36` ``

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