Number System Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 425 625 525 325 425 625 525 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 21 12 28 18 21 12 28 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System 124, 235, 447, 760, 1174, ? 1389 1589 1489 1689 1389 1589 1489 1689 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 824 920 625 712 824 920 625 712 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 95 103 92 99 95 103 92 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ? 2476 1760 3289 4589 2476 1760 3289 4589 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E/5 = 42∴ C = 42, ∴ B = 40, ∴ D = 44∴ B x D = 40 x 44 = 1760
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