Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 72 90 69 42 72 90 69 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System Pick the wrong number from the given number series. 3,4,10,33,135,685,4116 33 685 135 10 33 685 135 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The correct number is 136.3 x 1 + 1 = 44 x 2 + 2 = 1010 x 3 + 3 = 3333 x 4 + 4 = 136136 x 5 + 5 = 685685 x 6 + 6 = 4116
Number System One-eighth of a number is 76. What will be 54% of the number ? 332.32 318.32 328.32 321.32 332.32 318.32 328.32 321.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 7 5 11 3 7 5 11 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 30 24 Cannot be determined 20 30 24 Cannot be determined 20 ANSWER DOWNLOAD EXAMIANS APP
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 712 625 920 824 712 625 920 824 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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