Which of the following numbers will replace the question mark (?) in the given series?
1724, 1716, 1689, 1625, 1500, ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 1284.
1724, 1716,1689,1625,1500,?
1724 - 23 = 1716; 1716 - 33 = 1689; 1689 - 43 = 1625 ; 1625 - 53 = 1500; 1500 - 63 = 1284