The numerator and denominator of a fraction are in the ratio 2 : 3. If 6 is subtracted from the numerator, the value of the fraction becomes 2/3 of the original fraction. The numerator of the original...

The numerator and denominator of a fraction are in the ratio 2 : 3. If 6 is subtracted from the numerator, the value of the fraction becomes 2/3 of the original fraction. The numerator of the original fraction is: (a) 16 (b) 21 (c) 18 (d) 30 The last two-digits in the multiplication 122 × 123 × 125 × 127 × 129 will be (a) 20 (b) 50 (c) 30 (d) 40