Question
3 ? 7 16 71
346 What should come in place of the question mark (?) in the following number series?Solution
3 × 1 – 1 = 2 2 × 2 + 3 = 7 7 × 3 – 5 = 16 16 × 4 + 7 =71 71 × 5 – 9 = 346
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From a point on circular track 20 km long P, Q and R started running in the same direction at the same time with speed of 4 km per hour, 2 km per hour, ...
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