Find out the two signs to be interchanged for making following equation correct
5 + 3 x 8 - 12 / 4 =3
Answer: B
On interchanging - and /, we get the equation as
5 + 3 x 8 / 12 - 4 = 3
or 5 + 3 x (2/3) - 4 = 3
or 3 = 3, which is true.
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In the following question, correct the given equation by interchanging two numbers.
8 x 3 ÷ 4 + 9 – 5 = 16
Answer: C
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If "÷" denotes "multiplied by", "+" denotes "subtracted from", "x" denotes "added to" and "–" denotes "divided by",then
12 – 6 + 28 x 3 ÷ 9 = ?
Answer: C
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If A + B = 2C and C + D = 2A, then
Answer: A
Given,
A + B = 2C ----(i)
C + D = 2A----(ii)
Adding (i) and (ii) we get : A + B + C + D = 2C + 2A
=> B + D = A + C
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If ‘–‘ stands for ‘÷’, ‘+’ stands for ‘×’, ‘÷’ stand for ‘–‘ and ‘×’ stands for ‘+’, which one of the following question is correct?
Answer: A
30 ÷ 6 × 5 + 4 – 2 = 27
→ 5 × 5 + 4 – 2 = 27.
→ 29 – 2 = 27.
→ 27 = 27.
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If 3 # 4 % 8 = 6 and 9 % 4 # 3 = 12, then 12 % 6 # 24 = ?
Answer: B
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If ‘+’ stands for ‘×’, ‘–‘ for ‘÷’, ‘×’ for ‘–‘ and ‘÷’ for ‘+’, find the value of 12 + 90 – 5 × 9 ÷ 3.
Answer: C
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In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
5 + 10 x 21 ÷ 5 - 15 = ?
Answer: B
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What approximate value will come in place of question mark (?) in the following question ?
(49.001)⊃2; = ?
Answer: B
Given (49.001)⊃2; = ?
=> =~ 49 x 49
=~ 2401
=~ 2400
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A sum of Rs.1890 has to be used to give 9 prizes to the customers of a super market for their overall academic purchases. If each prize is Rs.30 less than its preceding price, what is the least value of the price ?
Answer: A
Let the least value of the prize = Rs. x
Then the next value of the prize is x+30 , x+60, x+90, ....x+240.
Given total amount of cash prizes = Rs.1890
--> x + (x+30) + (x+60) + (x+90) + ....+ (x+240) = 1890
--> 9x + (30 + 60 + 90 + 120 + 150 + 180 + 210 + 240) = 1890
--> 9x + 30(1 + 2 + 3 + 4....+ 8) = 1890
--> 9x + 30(36) = 1890
--> 9x = 810 --> x=90
Hence the least value of the prize x=90
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