Aptitude - Simplification
1.
[(125)2 ÷ 50 x 20] ÷ 25 =
Answer
[(125)2 ÷ 50 x 20] ÷ 25 =
125 x 12550 x 20 
÷ 25 = 125 x 5025 = 250
Answer :
Option DExplanation :
[(125)2 ÷ 50 x 20] ÷ 25 =
125 x 12550 x 20 ÷ 25 = 125 x 5025 = 250 2.
(35614 − 26889) ÷ 25 =
Answer
(35614 − 26889) ÷ 25 = 8725 ÷ 25 = 349
Answer :
Option BExplanation :
(35614 − 26889) ÷ 25 = 8725 ÷ 25 = 349
3.
999 995999 x 999 =
Answer
999 995999 x 999 =
1000 − 4999 
x 999 = (999000 − 4) = 998996
Answer :
Option BExplanation :
999 995999 x 999 =
1000 − 4999 x 999 = (999000 − 4) = 998996 4.
556 x 637 + 512 =
Answer
Given expression = 356 x 457 + 112 = 752 + 112 = 862 = 43
Answer :
Option DExplanation :
Given expression = 356 x 457 + 112 =
752 + 112 = 862 = 43 5.
−7m − [3n − {8m − (4n − 10m)}] =
Answer
Given expression :
−7m − [3n − {8m − 4n + 10m}] = −7m − [3n − {18m − 4n}]
= −7m − [3n − 18m + 4n] = −7m − [7n − 18m] = −7m − 7n + 18m
= 11m −7n
Answer :
Option DExplanation :
Given expression :
−7m − [3n − {8m − 4n + 10m}] = −7m − [3n − {18m − 4n}]
= −7m − [3n − 18m + 4n] = −7m − [7n − 18m] = −7m − 7n + 18m
= 11m −7n
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