Question

Which of the following is different from the others?
(a) 20 + ( –25)
(b) (– 37) – (– 32)
(c) (– 5) × ( –1)
(d) ( 45 ) ÷ ( – 9)

Answer 1

Option c is different from others. Because in (c) we get a positive integer as answer i.e., +5.
(a)20+(-25)=20-25=-5
(b)-37+32=-5
(c)-5*-1=+5
(d)( 45 ) ÷ ( – 9)=-5

Answer 2

i)20+(-25)=20-25= -5................................. ii) (-37)-(-32) =-37+32= -5........................................... iii) (-5)×(-1)= +5.................................... iv) 45÷(-9)= -5............... Since the answers of (i), (ii) and (iv) is -5 and the answer of (iii) is +5..... So C or (iii) is different from others.