Q.3 Identify the numerical coefficients of terms (other than constants) in the following expressions:
(i)\( 5 – 3t^2 \)
(ii)\( 1 + t + t^2 + t^3 \)
(iii)\( x + 2xy + 3y \)
(iv) \( 100m + 1000n \)
(v) \( – p^2q^2 + 7pq \)
(vi)\( 1.2 a + 0.8 b \)
(vii)\( 3.14 r^2 \)
(viii)\( 2 (l + b) \)
(ix)\( 0.1 y + 0.01 y^2 \)