Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 692 652 678 689 692 652 678 689 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? 2/5 Data inadequate 1/5 1/25 2/5 Data inadequate 1/5 1/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 26 23 25 24 26 23 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 99 92 95 103 99 92 95 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System 480% of 350 + 620% of 275 = ? 4385 3385 5385 2385 4385 3385 5385 2385 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 480 x 350/100 + 620 x 275/100= 1680 + 1705 = 3385
Number System In how many different ways can the letters of the word FORMULATE be arranged ? 362880 382880 392880 372880 362880 382880 392880 372880 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of letters = 9! = 9*8*7*6*5*4*3*2*1 = 362880
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