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DXC Logical Mathematical Order Quiz 4

Question 1

Time: 00:00:00

If + means ÷, – means ×, × means +, ÷ means –, give the value for
55 + 11 – 4 × 25 ÷ 5 = ?

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Ans: 40
Expl:
55 + 11 – 4 × 25 ÷ 5 = ?
⇒ ? = 55 ÷ 11 × 4 + 25 – 5
⇒ ? = 5 × 4 + 25 – 5
⇒ ? = 20 + 25 – 5
⇒ ? = 45 – 5
⇒ ? = 40.

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Question 2

Time: 00:00:00

Which interchange of signs will make the following equation correct?

(64 – 8) × 67 ÷ 5 + 10 = 61

÷ and –

÷ and +

– and +

× and -

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Ans: ÷ and –
Expl:

(64 – 8) × 67 ÷ 5 + 10 = 61
⇒ (64 ÷ 8) × 7 – 5 + 10 = 61
⇒ 8 × 7 – 5 + 10 = 61
⇒ 56 – 5 + 10 = 61
⇒ 66 – 5 = 61

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Question 3

Time: 00:00:00

35 * 2 * 6 = 8 * 8 * 0
Which set of symbols can replace?

×, –, ×, +

+, –, ×, +

×, + ×, –

×, +, +, ×

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Ans:
Expl:
From the first option, we get:
35 × 2 – 6 = 8 × 8 + 0
⇒ 70 – 6 = 44 + 0
⇒ 64 = 64.

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Question 4

Time: 00:00:00

If × stands for –, + means ×, ÷ means + and – means ÷, then what is the value of the given expression ?
225 – 25 ÷ 6 + 30 × 4 + 15 = ?

129

240

237

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Ans: 129
Expl:
225 – 25 ÷ 6 + 30 × 4 + 15 = ?
⇒ ? = 225 ÷ 25 + 6 × 30 – 4 × 15
⇒ ? = 9 + 180 – 60
⇒ ? = 189 - 60 = 129

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Question 5

Time: 00:00:00

Select the correct combination of mathematical signs to replace * signs and to balance the given equation:

40 * 12 * 4 * 45 * 75

÷ – = ×

× ÷ – =

+ ÷ × =

× = ÷ +

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Ans: × ÷ – =
Expl:
From the second option, we get:
40 × 12 ÷ 4 – 45 = 75
⇒ 40 × 3 – 45 = 75
⇒ 120 – 45 = 75

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Question 6

Time: 00:00:00

If ‘<’ means ‘minus’, ‘>’ means ‘plus’, ‘=’ means ‘multiplied by’ and ‘$’ means ‘divided by’ then what would be the value of 85 > 126 $ 7 < 14 ?

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Ans: 89
Expl:
85 + 126 ÷ 7 - 14
⇒ 85 + 18 - 14
⇒ 103 - 14 = 89

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Question 7

Time: 00:00:00

If Q means ‘add to’, J means ‘multiply by’, T means ‘subtract from’ and K means ‘divide by’, then 52 K 4 Q 4 J 9 T 9 = ?

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Ans. 40
Sol. Using the correct symbols, we have:
Given expression
52 K 4 Q 4 J 9 T 9 = ?
= 52 ÷ 4 + 4 × 9 – 9
= 13 + 36 – 9 = 40

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Question 8

Time: 00:00:00

If × means ÷, – means ×, ÷ means + and + means –, then (5 – 17 ÷ 5) × 9 + 13 = ?

-2

-3

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Ans: -3
Expl:
(5 – 17 ÷ 5) × 9 + 13 = ?
(5 × 17 + 5) ÷ 9 - 13
⇒ 90 ÷ 9 - 13
⇒ 10 - 13
⇒ -3.

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Question 9

Time: 00:00:00

If + means ÷, - means x, x means +, ÷ means -, then give the value for
143 + 11 - 9 x 25 ÷ 12

120

130

140

150

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Ans: 120
Expl: Given, 143 + 11 - 9 x 25 ÷ 12
Replacing the proper signs in the given expression,
143 ÷ 11 x 9 + 25 - 12
Using BODMAS rule,
13 x 9 + 25 - 12
= 117 + 15 - 12
= 132 - 12 = 120

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Question 10

Time: 00:00:00

Find out the two signs to be interchanged for making following equation correct
25 + 13 x 2 - 26 / 23 =3

+ and -

- and /

+ and x

+ and /

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Answer : - and /
Explanation:
On interchanging - and /, we get the equation as
25 + 13 x (2 /26) - 23 = 3
25 + 13 x (1/13) - 23 = 3
25 + 1 - 23 = 23
26 - 23 = 23, 3 = 3

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