Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 245 275 225 295 245 275 225 295 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 92 99 95 103 92 99 95 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 180 160 28 12 180 160 28 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System 8988 / 8 / 4 = ? 280.875 2247 561.75 4494 280.875 2247 561.75 4494 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System 666 / 6 / 3 = ? 333 84 37 111 333 84 37 111 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 556 515 660 720 556 515 660 720 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
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