Secondary School (English Medium) (5 to 8) इयत्ता ७ - CBSE Question Bank Solutions

State which of the following pairs of triangles are congruent. If yes, write them in symbolic form (you may draw a rough figure).

∆ABC: AB = 4.8 cm, ∠A = 90°, AC = 6.8 cm

∆XYZ: YZ = 6.8 cm, ∠X = 90°, ZX = 4.8 cm

In the following figure, PQ = PS and ∠1 = ∠2.

1. Is ∆PQR ≅ ∆PSR? Give reasons.
2. Is QR = SR? Give reasons.

In the following figure, DE = IH, EG = FI and ∠E = ∠I. Is ∆DEF ≅ ∆HIG? If yes, by which congruence criterion?

How many rational numbers are there between two rational numbers?

`(-16)/24` and `20/(-16)` represent ______ rational numbers.

`5/6 square 8/4`

Sum of two rational numbers is always a rational number.

The quotient of two rationals is always a rational number.

Two rationals with different numerators can never be equal.

Arrange the rational numbers `(-7)/10, 5/(-8), 2/(-3), (-1)/4, (-3)/5` in ascending order.

List four rational numbers between `5/7` and `7/8`.

Which is greater in the following?

`3/4, 7/8`

Which is greater in the following?

`-3 5/7, 3 1/9`

‘a’ and ‘b’ are two different numbers taken from the numbers 1 – 50. What is the largest value that `(a - b)/(a + b)` can have? What is the largest value that `(a + b)/(a - b)` can have?

Find the odd one out of the following and give reason.

(1⁰ + 2⁰ + 3⁰) is equal to ______.

Which of the following is equal to 1?

Find the value of:

7⁰

Find the value of:

`(–7)^(2 xx 7 - 6 - 8)`

Find the value of:

(2⁰ + 3⁰ + 4⁰) (4⁰ – 3⁰ – 2⁰)