Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 30 40 22 1/2 45 30 40 22 1/2 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ? 9 6 8 7 9 6 8 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 101 121 111 131 101 121 111 131 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System 5525 ÷ 17 = √? 93025 105625 99225 112225 93025 105625 99225 112225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 89 91 35 75 89 91 35 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 660 720 556 515 660 720 556 515 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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