Number System 35 + 15 * 1.5 = ? 51.5 75 57.5 5.25 51.5 75 57.5 5.25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ? 1327 1168 1468 1292 1327 1168 1468 1292 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34, E = 38Therefore, Product = 34 x 38 = 1292
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 61 65 69 74 61 65 69 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 44 80 88 40 44 80 88 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 20160 19765 17453 18456 20160 19765 17453 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 5 10 6 4 5 10 6 ANSWER DOWNLOAD EXAMIANS APP
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