Number System How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together? 11 8 9 10 11 8 9 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (700 – 300)/42 = 9 22/42 => 9 Numbers
Number System What least number should be added to 8602 to make it a perfect square ? 41 47 51 36 41 47 51 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System 1089/? = ?/1296 1278 1188 1082 1348 1278 1188 1082 1348 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 245 232 225 220 245 232 225 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 10 14 12 16 10 14 12 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System What is the value of ? in the following equations ? 72/? = ?/50 100 40 60 80 100 40 60 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
EXAMIANS