Number System 2536+4851—?=3450+313 4567 5243 3624 6784 4567 5243 3624 6784 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ? 1224 820 987 525 1224 820 987 525 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs =17 x 12 x 6 = 1224
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 20 24 30 Cannot be determined 20 24 30 Cannot be determined ANSWER DOWNLOAD EXAMIANS APP
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 8 16 18 12 8 16 18 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 65 61 74 69 65 61 74 69 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 A + B = 30 and AB = 94, What is the value of A² + B² ? 712 824 920 625 712 824 920 625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
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