Number System If all the fractions 3/10, 1/16, 4/11, 2/9, 1/7, 5/14 and 5/24 arranged in descending order of their values, then which one will be the third? 2/9 4/11 1/16 3/10 2/9 4/11 1/16 3/10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/10 = 0.3, 1/16 = 0.0625, 4/11 = 0.36, 2/9 = 0.22, 1/7 = 0.14, 5/14 = 0.36 and 5/24 = 0.214/11 > 5/14 > 3/10 > 2/9 > 5/24 > 1/7 > 1/163/10 will be the third.
Number System The product of two consecutive odd numbers is 6723. Find is the greater number. 80 85 77 83 80 85 77 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the first odd number be x.Then, the other odd number would be x + 2.∴ x(x+2) = 6723= x2 + 2x = 6723= x2 + 2x = 6723= x2 + 2x - 6723 = 0= x2 + 83 - 81 x - 6723 = 0= x(x+83) - 81 (x + 83) = 0= (x + 83) (x - 81) = 0= (x + 83) (x - 81) = 0= x - 81 = 0∴ x = 81Hence, greater number = x + 2 = 81 + 2 = 83
Number System 1827÷ 36 x ?=162.4 1.9 3.2 2.6 4.3 1.9 3.2 2.6 4.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 14 12 10 16 14 12 10 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System ?125÷5x ?=6265 153 124 1452 1253 153 124 1452 1253 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System What is the sum of all the prime numbers from 20 to 40? 117 119 118 120 117 119 118 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
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