Class 7th maths

The exponential form of - 64 / 125 is

• (4/5) ³

• 4³/5³

• (-4/5)³

The product of the square of 2/3 and 1/7 is

• 1/441

• 2/441

• 3/441

• 4/441

The value of x and 3 x = 81 is

• 1

• 2

• 3

• 4

(11/13)⁰ equals

• 11/13

• 13/11

• 0

• 1

If 2³ + 1³ = 3x, then X =

• 1

• 2

• 3

• 6

The expression of 0.0004 to 7 in the standard form is

• 4.27 X (10)-⁴

• 4.27 X (10)-2

2 standard form of

1.5 x (10) ⁶ / 2.5 x ( 10)-4

• 4 X (10)⁹

• 6 X (10)⁹

Ratio of 750 ml to 1.5 litre is

• 2 : 1

• 5:1

• 1:2

The first second and fourth term of a proportion are6 ,18 and 25 its third term will be

• 6/25

• 25/6

• 25/3

The mean proportional between 16 and 4 is

• 8

• 3

• 4

• 16