Number System One-eighth of a number is 76. What will be 54% of the number ? 332.32 328.32 318.32 321.32 332.32 328.32 318.32 321.32 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 How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 56 36 48 52 56 36 48 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1965 1945 1955 1975 1965 1945 1955 1975 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because (x + y)² = x² + y² + 2xy∴ x² + y² = (x + y)² - 2xy∴ x² + y² = (61)² - 2 x 888= 3721 - 1776 = 1945
Number System In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, the dividend is: 9865 2568 6890 5336 9865 2568 6890 5336 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5336
Number System 84 * 29 + 365 = ? - 2071 - 2801 2436 2801 - 2071 - 2801 2436 2801 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP - 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 163 146 124 179 163 146 124 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
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