• This is an assessment test.
• To draw maximum benefit, study the concepts for the topic concerned.
• Kindly take the tests in this series with a pre-defined schedule.

## Number System: Exponent Test-3

Congratulations - you have completed Number System: Exponent Test-3. You scored %%SCORE%% out of %%TOTAL%%. You correct answer percentage: %%PERCENTAGE%% . Your performance has been rated as %%RATING%%
 Question 1
Which of the following expressions is equal to 218 ?
 A (23)6 B 29+2 C 2326 D 9x26
Question 1 Explanation:
The correct expression in this case is option A.
xmn equals to (xm)n
 Question 2
What will be the value of P= 4a+4a+4a+4a
 A 16a B 44a C 4a+1 D None
Question 2 Explanation:
= 4a+4a+4a+4a
= 4a(1+1+1+1)
= 4a x ( 4)
= 4a+1
 Question 3
If q = {y(y2)4} / y5 when y is greater than 0 then what would be the exponent of y.
 A 2 B 3 C 4 D 5
Question 3 Explanation:
Since the question is to find the exponents of y in {y(y2)4} / y5
Therefore ={y(y2)4} / y5 ={y x y8} / y5
={y x y8} / y5 = { y9} / y5 = y4
So the exponent of y is 4
 Question 4
If a and b are not equal to 0, then a18b9 must be
 A Positive B Negative C An integer D both A or B
Question 4 Explanation:
If a is negative and b is positive then the result will be positive
If b is negative and a is positive then the result will be negative
So we will consider both the cases and therefore the number can be positive of negative
So the right answer is D
 Question 5
If a and b are positive integers and a4 +b5 = 259, then value of a + b =?
 A 7 B 9 C 6 D 5
Question 5 Explanation:
We have a4 +b5 = 259
So from option A = 7 so the value of A and B(1,6)(2,5)(3,4) and vice-versa
but no one option satisfy the condition so option a is rejected
For option B i.e.9 the pairs are (1,8), (2,6), (3,5), (4,4) and vice versa
For option C i.e. for 6 the pairs are (1,5), (2,4), (3,3) and vice versa
For option D i.e. for 5 the pairs are (1,4), (2,3),  and vice versa
See 24 +35 = 259
So the right answer is 5 option D
Once you are finished, click the button below. Any items you have not completed will be marked incorrect.
There are 5 questions to complete.
 ← List →