Mathematical Operation questions Practice Question and Answer
8 Q: Which of the mathematical signs should be interchanged in the given equation to make it mathematically correct?
31 ÷ 14 × 9 + 3 − 7 = 66
1197 0642120d19d18d2e8ae0e395e
642120d19d18d2e8ae0e395e- 1÷ and +true
- 2÷ and ×false
- 3− and ×false
- 4− and +false
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Answer : 1. "÷ and +"
Q: If ‘+’ means ‘×’, ‘-’ means ‘÷’, ‘×’ means ‘+’ and ‘÷’ means ‘-’ then what is the value of a given equation?
225 ÷ 5 + 96 – 3 × 31
1185 06065a9a25815fc6501f8467f
6065a9a25815fc6501f8467f225 ÷ 5 + 96 – 3 × 31
- 1106false
- 2116false
- 386false
- 496true
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Answer : 4. "96"
Q: Which of the following interchanges in signs will make the given equation correct?
17- 15 x 5 = 250
1184 062e7e7eb6f92bf0da7c49231
62e7e7eb6f92bf0da7c49231- 1= and xfalse
- 2+ and -false
- 3= and -false
- 4x and -true
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Answer : 4. "x and -"
Q: By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 7 and 6
1176 064c8fa5c3fde307e3f4fd7f6
64c8fa5c3fde307e3f4fd7f6+ and –, 7 and 6
- 14 × 7 + 6 – 3 ÷ 1 = 20true
- 28 × 7 + 5 ÷ 1 – 6 = 17false
- 37 – 6 × 3 + 4 ÷ 1 = 8false
- 47 × 2 – 6 + 4 ÷ 2 = 13false
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Answer : 1. "4 × 7 + 6 – 3 ÷ 1 = 20"
Q: By interchanging the given two signs and numbers which of the following equation will be not correct?
÷ and ×, 1 and 3
1162 064be6fb82dc867f59312c0f3
64be6fb82dc867f59312c0f3÷ and ×, 1 and 3
- 16 ÷ 3 – 1 + 4 × 2 = 5false
- 24 × 3 – 1 + 8 ÷ 2 = 9true
- 35 – 8 × 3 + 9 ÷ 1 = 24false
- 46 + 4 – 9 × 3 ÷ 1 = –17false
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Answer : 2. "4 × 3 – 1 + 8 ÷ 2 = 9"
Q: If M denotes ‘−’, N denotes ‘÷’, O denotes ‘×’ and P denotes ‘+’, then what will come in place of ‘?’ in the following equation?
(38 O 13) N 19 M 27 P (38 O 3) P 43 M 68 = ?
1152 06464bcf545f1450a80cea4b5
6464bcf545f1450a80cea4b5(38 O 13) N 19 M 27 P (38 O 3) P 43 M 68 = ?
- 182false
- 288true
- 392false
- 490false
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Answer : 2. "88"
Q: Which of the following interchanges in signs and numbers will make the given equation correct?
8 x 6 + 4 = 52
1133 062d6722e313eb40eb8733698
62d6722e313eb40eb8733698- 1x and +, 8 and 4true
- 2+ and x, 6 and 8false
- 3x and +, 8 and 52false
- 4+ and x, 6 and 4false
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Answer : 1. "x and +, 8 and 4"
Q: Which of the following interchanges of numbers and mathematical signs would make the given equation correct?
729 × 81 ÷ 20 + 16 − 6 = 50
1128 06479c210bf323e479a7fd7fc
6479c210bf323e479a7fd7fc729 × 81 ÷ 20 + 16 − 6 = 50
- 16 and 20, × and ÷true
- 220 and 50, + and −false
- 316 and 50, × and +false
- 416 and 20, + and ÷false
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