Number System If three eighth of a number is 141. What will be the approximately value of 32.08% of this number? 60 90 120 160 60 90 120 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/8 = 141 => x= 376376 * 32.08/100 = 120
Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 245 295 225 275 245 295 225 275 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 (3² x 4² x 5) ÷ 36 = (?)² - 80 14 16 10 12 14 16 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System What is the least number to be subtracted from 696 to make it a perfect square? 16 1 20 71 16 1 20 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 81 82 83 84 81 82 83 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System If 35% of a number is 899.5, what is 68% of that number ? 1747.6 2247.6 1547.6 1847.6 1747.6 2247.6 1547.6 1847.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6