A child makes tower of 4 cubes at ?: (A) 1 year, (B) 11/2 years, (C) 3 years, (D) 4years
Answer is B. Ans. is 'b' i.e., 11/2 years Age Number of cubes of tower 12 months 2 15 months 3 18 months 4 21 months 6 24 months 7 30 months 9 36 months 10