STD 5 math set 4

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1) If the factors of a number are 1,3,7, and 21, what is the number?

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2) What is the smallest positive factor of every number?

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3) If a number is increased by 25% and then decreased by 10%, what is the net change?

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4) What is the Roman numeral for 90?

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5) If you invest Rs. 400 at an interest rate of 4% , how much interest will you earn after three years ?

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6) If the cost price of a book is Rs.15 and you sell it at a profit of 30%. What is the selling price?

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7) What is the product of 9 and the difference between 15 and 7?

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8) If two squares of side 30cm each are joined to form a rectangle, what is the area of the rectangle?

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9) If you have the decimal 0.75, what fraction does it represents?

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10) If the average of four numbers is 14, and three of the numbers are 12, 16, and 18, what is the fourth number?

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11) If a number is decreased by 20% and then increased by 25%, what is the net change?

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12) In the number 12,34,895 , which digit is in the lakhs place ?

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13) When 10% of 350 is subtracted from 15% of 600 , the result is ________.

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14) A room is 13.6 m long and 6.4 m wide. It is to be paved with square marble tiles each of side 80cm. Number of marble tiles required is _______

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15) If you subtract the face value of 5 from the place value of 5 in the number 5,372, what is the result?

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16) If the cost price of a pair of shoes is Rs.30 and you sell it for Rs.40, what is the profit?

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18) If you invest Rs.500 at an interest rate of 5%, how much interest will you pay after two years?

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19) If you subtract 1.5 from 2.7, what is the difference?

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20) What is the Roman numeral for 50- 5?

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21) If the sum of four consecutive even numbers is 100, what is the largest of these numbers?

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22) If a triangle has angles measuring 30 degrees, 60 degrees, what type of triangle is it ?

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23) If you roll a six-sided die 20 times, what is the expected frequency of rolling a 3?

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24) If you subtract 14,59,814 from 37,56,134 what is the answer?

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25) If a number is divisible by 10, which of the following numbers is it also divisible by?

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