Mathematics Practice Paper 12

700000000 is equal to:

• 7 × 10^8

• 7 × 10^7

• 7 × 10^6

• 7 × 10^9

If (31/2) + (6/x) = 0, then the value of x is

• 2

• 0

• 1

• −2

The value of (2^2 - 1) + (3^2 - 4) + (3^2 - 9) is

• 289/36

• 313/72

• 27/4

• 241/36

13 x 10^-7 Km is the standard form of which of the following ______________ .

• 0.000000013 Km

• 0.0000013 Km

• 0.000000000013 Km

• 0.00000000013 Km

The multiplicative inverse of 7^-2 is:

• 7^2

• 7

• 1/7^2

• 1/7

In the below question, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as Assertion (A): 3^3 - 1 = 2^2 Reasoning (R): A negative exponent means reciprocal of the base raised to the positive of that exponent.

• Both A and R are true and R is the correct explanation of A

• Both A and R are true but R is not the correct explanation of A

• A is true but R is false

• A is false but R is true

Find the value of x for which 2^x ÷ 2^-4 = 4^5

Find the value of x for which (3^11)/(7^5) = (7^7)/(5^5)

Find the value of m for which 5^m ÷ 5^-3 = 5^5

Simplify: (2^3 * 2^2)/(3^2 * 2^4)