Class VII

The value of expression 7a-4b for a=3,b=2 is
  1. 13
  2. 7a-6b
  3. 21a-8b
  4. 29
The coefficient of y3 in the expression y – y3 + y2 is
  1. 1
  2. y
  3. -y3
  4. -1
Which of the following is monomial
  1. 2x +3
  2. 2x
  3. 4x+2y+3
  4. 4y+5x+z ̶ 1
The value of expression 5n – 2, when n= -2 is
  1. -12
  2. 8
  3. 1
  4. -8
The expression for sum of numbers a and b subtracted from their product is
  1. a+b –ab
  2. ab-a+b
  3. ab-(a+b)
  4. ab + a - b.
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