Explanation

7/4 ÷ [77/8 ÷ 30/5 ]

7/4 ÷ [77/8 × 5/30]

= 7/4 ÷ 77/48

= 7/4 × 48/77

= 12/11

Explanation

20% of the 80

=20/100*80

=1/5*80

=1*16

=16

Explanation

“Could” is used to express ability in the past.

The correct sentence is: "He could sing high notes when he was young but his voice has changed."

Explanation

Charming means دلکش

"Charming" is the most fitting adjective to describe a pleasant and delightful weekend in Karachi, as it conveys a sense of warmth and appeal.

Explanation

In this sentence, the structure requires the present tense because the statement is a general truth.

The word "becomes" is the correct form.

Explanation

Factors of 4 = 1, 2, 4

Factors of 6 = 1, 2, 3, 6

Factors of 8 = 1, 2, 4, 8

Highest Common Factor (H.C.F) = 2 (common to all three numbers)

Explanation

To find 3/7 of 14:

(3/7) * 14 = 3 * 2 = 6

Explanation

The head of a chlorophyll molecule contains a porphyrin ring with a central magnesium (Mg) atom.

This ring has four nitrogen atoms that coordinate with the magnesium, forming a stable complex essential for photosynthesis.

Explanation

Steam causes more severe burns than boiling water because it carries latent heat of vaporization.

It releases extra energy when it condenses on the skin.

Explanation

Bold means بہادر

Timid means ڈرپوک