Number System How many numbers up to 100 and 300 are divisible by 11? 18 20 21 22 18 20 21 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System If 35% of a number is 899.5, what is 68% of that number ? 1547.6 2247.6 1747.6 1847.6 1547.6 2247.6 1747.6 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
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 720 515 660 556 720 515 660 556 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
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 99 103 95 92 99 103 95 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System Find the least value of 3x + 4y if x2y3 = 6. 10 6 7 3 10 6 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is? 6 Nothing can be said. 1 4 6 Nothing can be said. 1 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) – (10y + x) = 54x – y = 6
EXAMIANS