Question
2, 6, ?, 20, 30,
42 What will come in place of the question mark (?) in the following series?Solution
The given series follows the following pattern: 11 + 1 = 2 22 + 2 = 6 32 + 3 = 12 42 + 4 = 20 52 + 5 = 30 62 + 6 = 42
Determine the average of all prime numbers that lie between 35 and 70.
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