1.

For the four sets of three measured physical quantities as given below. Which of the following options is correct ?(i) A1 = 24.36, B1 = 0.0724, C1 = 256.2(ii) A2 = 24.44, B2 = 16.082, C2 = 240.2(iii) A3 = 25.2, B3 = 19.2812, C3 = 236.183(iv) A4 = 25, B4 = 236.191, C4 = 19.5

Answer»

A1 + B1 + C1 = 24.36 + 0.0724 + 256.2

= 280.6324

= 280.6 (After rounding off)

A2 + B2 + C2 = 24.44 + 16.082 + 240.2

= 280.722

= 280.7 (After rounding off)

A3 + B3 + C3 = 25.2 + 19.2812 + 236.183

= 280.6642

= 280.7 (After rounding off)

A4 + B4 + C4 = 25 + 236.191 + 19.5

= 280.691

= 281 (After rounding off)

A4 + B4 + C4 > A3 + B3 + C3 = A2 + B2 + C2 > A1 + B1 + C1

abca + b + c = dRound off
1220.120.456740.118d1 = 280.6747280.7
2218.222.362540.372d2 = 280.9345280.9 
3221.220.2435 39.432 d3 = 280.8755280.9
4221.4 18.362540.281d4 = 280.0435280.0


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