Number System If the difference between a number and its three fifths is 62, what is the number ? 155 175 165 145 155 175 165 145 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System The sum of three consecutive multiples of 3 is 72. What is the largest number? 24 21 36 27 24 21 36 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1955 1965 1975 1945 1955 1965 1975 1945 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 A number exceeds by 25 from its 3/8 part. Then the number is? 35 32 40 39 35 32 40 39 ANSWER DOWNLOAD EXAMIANS APP
Number System Complete the series : 1, 2, 3, 5, 8, 13 .... 9 4 1 7 9 4 1 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 56 48 36 52 56 48 36 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
EXAMIANS