Mathematical Operation questions Practice Question and Answer
8 Q: By interchanging the given two signs, which of the following equations will NOT be correct?
× and –
I. 17 – 21 + 86 ÷ 2 × 13 = 387
II. 10 + 63 – 12 × 259 ÷ 7 = 739
441 0642e785232185cce372317c1
642e785232185cce372317c1× and –
I. 17 – 21 + 86 ÷ 2 × 13 = 387
II. 10 + 63 – 12 × 259 ÷ 7 = 739
- 1Equation Ifalse
- 2Equation IItrue
- 3Neither I nor IIfalse
- 4Both I and IIfalse
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Answer : 2. "Equation II "
Q: By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 7 and 6
436 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
430 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: After interchanging which two signs will the value of the given expression be ‘35’?
13 + 91 − 3 ÷ 529 × 23
430 0642e9aa9dcb650c1457eda76
642e9aa9dcb650c1457eda76- 1+ and –false
- 2× and ÷true
- 3× and +false
- 4- and ÷false
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Answer : 2. "× and ÷"
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 = ?
429 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: By Interchanging the given two numbers which of the following equation will be not correct?
3 and 8
419 064785d4cf295c14cc803f0cd
64785d4cf295c14cc803f0cd3 and 8
- 17 + 3 – 4 ÷ 2 × 8 = 9false
- 26 ÷ 2 × 8 + 3 – 1 = 17true
- 38 – 3 + 6 × 2 ÷ 4 = –2false
- 42 + 3 – 6 ÷ 2 × 8 = 1false
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Answer : 2. "6 ÷ 2 × 8 + 3 – 1 = 17"
Q: Which two signs need to be interchanged to make the following equation correct?
73 – 13 × 42 ÷ 14 + 56 = 56
415 0643e7d4501d99786d0f0e227
643e7d4501d99786d0f0e227- 1+ and ×true
- 2× and ÷false
- 3– and +false
- 4– and ×false
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Answer : 1. "+ and ×"
Q: In a certain language, if '+' means 'subtraction', '×' means 'division', '÷' means 'addition', and '–' means 'multiplication', then find the value of the following expression (BODMAS rule does not apply in that language).
8 ÷ 16 × 4 + 2 – 3
414 06458f0047f8252086629244e
6458f0047f8252086629244e8 ÷ 16 × 4 + 2 – 3
- 11false
- 212true
- 39false
- 45false
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