Number System How many numbers up to 100 and 300 are divisible by 11? 18 21 22 20 18 21 22 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 74 76 75 73 74 76 75 73 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System If the difference between a number and its three-fourth is 18, find the number. 61 57 72 68 61 57 72 68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 20 years 19 years 18 years 17 years 20 years 19 years 18 years 17 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 2 9 6 5 2 9 6 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers? 171 170 169 168 171 170 169 168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 168
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