Question

Find the missing term in the given series:

40            30             ?              870             13880

A 120 Correct Answer Incorrect Answer
B 100 Correct Answer Incorrect Answer
C 155 Correct Answer Incorrect Answer
D 95 Correct Answer Incorrect Answer

Solution

40 x  1² - 10 = 30 30 x  2² - 20 = 100 100 x  3² - 30 = 870 870 x  4² - 40 = 13880

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