The dimensions of four types of burnt clay bricks P, Q, R, S and T taken from five sites are given below. Identify the bricks which fall under the category of standard modular size of common burnt clay building brick as per IS 1077 : 1992. (All dimensions of bricks are in mm.)
P: 230 × 110 × 70
Q: 230 × 110 × 30
R: 190 × 100 × 90
S: 190 × 90 × 90
T: 190 × 90 × 40
1
P, Q, and R only
2
P and R only
3
P and Q only
4
S and T only
5
Question Not Attempted