1.

Multiply with a fixed number :Eg: 5, 15, 45, 135, 405, …….. (a) 1200 (b) 1215 (c) 850 (d) 925

Answer»

Correct option is : (b) 1215

(5 × 3), (15 × 3), (45 × 3), (135 × 3), 

so, next number is (405 × 3) = 1215



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