A certain amount invested in a firm would become double at the end of one month, but it deducts an amount of ₹120 on every doubling. A person invests an amount of ₹105 and continues for 3 months without investing any additional amount. At the end of 3 months, his net income is [#1695]

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Q1. A certain amount invested in a firm would become double at the end of one month, but it deducts an amount of ₹120 on every doubling. A person invests an amount of ₹105 and continues for 3 months without investing any additional amount. At the end of 3 months, his net income is
Q1. A certain amount invested in a firm would become double at the end of one month, but it deducts an amount of ₹120 on every doubling. A person invests an amount of ₹105 and continues for 3 months without investing any additional amount. At the end of 3 months, his net income is

(A) 55
(A) 55

(B) 0
(B) 0

(D) 45
(D) 45

Answer: (B) 0
Answer: (B) 0

1st Month -> (105 * 2) - 120 = 210 - 120 = 90 2nd Month -> (90 * 2) - 120 = 180 - 120 = 60 3rd Month -> (60 * 2) - 120 = 120 - 120 = 0

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Q3. The price of an article is first decreased by 40% and then increased by 20%. The net change in the price will be :
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(B) 40%
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(D) 28%
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Net change (-40 + 20 +

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Q6. What is the term for the result of multiplying a number by itself?
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Q10. 4/5 of a number is 64. Then half of the number is
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