Olympiad Test: Exponents And Powers - 2


10 Questions MCQ Test Mathematical Olympiad Class 8 | Olympiad Test: Exponents And Powers - 2


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Attempt Olympiad Test: Exponents And Powers - 2 | 10 questions in 30 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Mathematical Olympiad Class 8 for Class 8 Exam | Download free PDF with solutions
QUESTION: 1

 the value of x will be:

Solution:

(2)5 = 32

QUESTION: 2

By what number (23)-3 should be multiplied so that the product becomes (69)-1?

Solution:

QUESTION: 3

then k will be equal to: 

Solution:



 

QUESTION: 4

The distance between earth and the sun is 15 ×107 km. Express this distance in metres.

Solution:

Distance
  

QUESTION: 5

Simplify : 

Solution:


QUESTION: 6

(6 + 3) × 9-1 ÷ 3-1 + 2-2 =

Solution:

Here (6 + 3) × 9-1 ÷ 3-1 + 2-2                 
= 9 × 9-1 ÷ 3-1 + 2-2

QUESTION: 7

m ≠ 0, p ≠ 0 and m = n = p

Solution:

We have 

QUESTION: 8

The size of a plant cell is 0.00001275 m. Express this distance in standard form.

Solution:

Size of plant cell
 

QUESTION: 9

Solution:


QUESTION: 10

 then x =

Solution:

Here 23x + 5 × (3)2x + 5
= (2)3x + 2 × (3) 3x + 2

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