Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6383 6353 6373 6363 6383 6353 6373 6363 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 720 840 780 660 720 840 780 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 18 8 12 16 18 8 12 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System If HKUJ means FISH, what does UVCD mean ? STAM STAK STAR STAB STAM STAK STAR STAB ANSWER EXPLANATION DOWNLOAD EXAMIANS APP STAB
Number System What is 432 times 119 ? 51408 53408 52408 50408 51408 53408 52408 50408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N2 N(N + 1) N2 + 1 N(N + 1)/2 N2 N(N + 1) N2 + 1 N(N + 1)/2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS