Instructions

What should come in place of the question mark (?) in the following number series?

Question 173

403 400 394 382 358 310 ?

Solution

Clearly ,

403 - 3 = 400

400 - 6 = 394

394 - 12 = 382

382 - 24 = 358

358 - 48 = 310

The subtracted numbers are by multiplied by 2 each rime .So ,

310 - 96 = 214


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