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Ala Rishika

2 years, 1 month ago

8 17 42 91. ?

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Curren Rajesh

2 years, 1 month ago

yes but after difference of 49 we have to take difference of 81 so ... 9^2 +91 =81+91= 172

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Ashutosh Karki

2 years, 1 month ago

11^2 + 91= 121+91=212

Difference is the sq. of odd no.s.

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