1.

Adding or subtract of natural numbers: Eg: 6, 7, 9, 12, 16, 21,… (a) 21 (b) 25 (c) 27 (d) 28

Answer»

Correct option is : (c) 27

(6 + 1), (7 + 2,), (9 + 3), (12 + 4), (16 + 5) 

so, next number is (21 + 6) = 27



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