Question 29.
The coefficient of x²y in -15 x²y is
(a) 15
(b) -15
(c) 3
(d) 5.
Answer
Question 30.
The coefficient of xy in 6x²y² is
(a) xy
(b) 2xy
(c) 3xy
(d) 6xy
Answer
Question 31.
The coefficient of xy2z in -7x2y3z is
(a) -7xy
(b) 7xy
(c) -xy
(d) xy.
Answer
Question 32.
The sum of 7x, 10x and 12x is
(a) 17x
(b) 22x
(c) 19x
(d) 29x.
Answer
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29)b.-15
30)a.xy
31)a.-7xy
32)d.29x
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