Question
The sum of four consecutive even numbers is 108. What is
the sum of the squares of these numbers?ÂSolution
Let the consecutive even number be x, x + 2, x + 4 and x + 6 Now, x + x + 2 + x + 4 + x + 6 = 108 4 x + 12 = 108 4 x = 96 x = 24 Now, Numbers are 24, 26, 28 and 30 Required sum = 24² + 26² + 28² + 30² = 576 + 676 + 784 + 900 = 2936
More No. System Questions
- Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___ - Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN