Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 5 6 9 2 5 6 9 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System Sum of two consecutive even terms lacks by 98 from their product. Find the sum of these number None 18 32 24 None 18 32 24 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 84.5 85.5 82.5 83.5 84.5 85.5 82.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 7 3 5 11 7 3 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6080 6000 5976 5800 6080 6000 5976 5800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System If three eighth of a number is 141. What will be the approximately value of 32.08% of this number? 160 120 90 60 160 120 90 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/8 = 141 => x= 376376 * 32.08/100 = 120
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