Question
Which of the following numbers will replace the question
mark (?) in the given series? 380, 552, 870, ?, 1406Solution
Starting with 19, each prime number is multiplied with the next number as below. Â 19 x 20 = 380; 23 x 24 = 552, 29 x 30 = 870, 31 x 32 = 992; 37 x 38 = 1406. Â Hence, the missing number is 992. The correct answer is option (B).
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