Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 25 26 23 24 25 26 23 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
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 = ? 325 525 625 425 325 525 625 425 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.484 8.584 8.784 8.684 8.484 8.584 8.784 8.684 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 8 10 9 7 8 10 9 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System In how many different ways can the letters of the word FORMULATE be arranged ? 372880 392880 382880 362880 372880 392880 382880 362880 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of letters = 9! = 9*8*7*6*5*4*3*2*1 = 362880
Number System The number of prime factors of (6)10×(7)17×(55)27 101 41 91 61 101 41 91 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
EXAMIANS