1.

8.12250?(a) 2510(b) 27 () 23 26

Answer»

5 = 2*2 + 1 10 = 3*3 + 1 5*5 + 1 = 26 50 = 7*7 + 1 122 = 11*11 + 1 Logic is square of prime number and addition of 1.

so missing number is 26.

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