Identify the property — task. Maths CBSE Live product, Class 8 (2026-27).

1. Which among the following statement is true.

$(a - m) (b - n) = ab - bm - an + bn$
$(a - m) (b + n) = ab - bm + an - am$
$(a + m) (b + n) = ab + bn + am + mn$
$(a - m) (b + n) = ab - mb + an - mn$

2. Which among the following is the correct application of the above identity of distributive property?

$27 \times 77 = (30 - 3) (70 + 7)$
$27 \times 77 = (30 - 3) \div (70 + 7)$
$27 \times 77 = (30 - 3) + (70 + 7)$
$27 \times 77 = (30 - 3) - (70 + 7)$

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