Number System One-eighth of a number is 76. What will be 54% of the number ? 318.32 321.32 332.32 328.32 318.32 321.32 332.32 328.32 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 What is the least number to be subtracted from 696 to make it a perfect square? 1 20 16 71 1 20 16 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System Find the number of factors of 300 excluding 1 and itself. 18 14 16 15 18 14 16 15 ANSWER DOWNLOAD EXAMIANS APP
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 25.84 21.84 27.84 24.84 25.84 21.84 27.84 24.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 76 74 75 73 76 74 75 73 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? None 4 6 2 None 4 6 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
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