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Mathematical Operations

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Answer: C

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52.

If L stands for +, M stands for –, N stands for ×, P stands for ÷, then 14 N 10 L 42 P 2 M 8 = ?

Answer: A

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53.

Can you Solve 7 + 7 ÷ 7 + 7 x 7 + 7 − 7 ÷ 7 + 7 x 7

Answer: A

 

7  + 7 ÷ 7 + 7 x 7 + 7 − 7 ÷ 7 + 7 x 7

= 7 + 1 + 49 + 7 − 1 + 49

= 8 + 56 + 48

= 56 + 56

= 112

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54.

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

10 x 4 + 5 - 30 ÷ 6 = 31

Answer: A

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55.

3 x 3 + 3 - 3 + 3 = ?

Answer: B

Using BODMAS law,

3 x 3 + 3 - 3 + 3 =

3 x 3 = 12

= 12 + 3 - 3 + 3

=  9 + 3

= 12

 

Hence, 3 x 3 + 3 - 3 + 3 = 12.

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56.

If 19 (36) 13 and 37 (81) 28, then what is the value of 'A' in 43 (A) 38?

Answer: C

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57.

 

If (3)⊃2; @ 1 * 7 = 98 and (4)⊃2; @ 2 * 16 = 178, then (5)⊃2; @ 3 * 9 = ?

Answer: B

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58.

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?

Answer: B

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59.

If ‘+’ means ‘÷’, ‘–‘ means ‘×’, ‘×’ means ‘+‘, ‘÷’ means ‘– ‘,  given the value of 45 + 9 – 3 × 15 ÷ 2.

Answer: D

45 ÷ 9 × 3 + 15 – 2.

= 5 × 3 + 15 – 2.

= 15 + 15 – 2 = 28

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60.

If, 4x3=14; 5x4=18; 6x5=22; Then find the value of 7x6=?

Answer: B

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