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The grades obtained by 30 students of cl...

The grades obtained by 30 students of class VII are as follows :
`{:(A^(+),B^(+),A,B,A^(+),B^(+),A^(+),B,B,B^(+),A,A,A^(+),B,B^(+)),(A,A^(+),B,B,A,A,A^(+),A^(+),B,B^(+),B,B^(+),A^(+),A^(+),A):}` If a student has been select at random, then find the probability that he has obtained grade `A^(+)` .

A

`(7)/(10)`

B

`(7)/(30)`

C

`(9)/(10)`

D

`(3)/(10)`

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The correct Answer is:
D
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SCIENCE OLYMPIAD FOUNDATION -IMO QUESTION PAPER 2018-19 SET A-Logical Reasoning
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  2. If (3)/(7) of 64% of (x)/(21) is 1280, then the value of x is .

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  3. Simplify : (2^(p-8)xx8^(q-4))/(2^(p-11)xx8^(q-5))

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  4. In the given figure, if /A = 2 / B and / ACD = 2 / DCB, then find the ...

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  5. Which of the following options represents the value of p shown on the ...

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  6. In the given figure, ACD is a straight line . AC = CB and BF || DE . F...

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  7. Select a pair of integers whose sum is -51.

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  8. A circle with centre at O and radius 5 cm is given . A right angled tr...

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  9. By how much is -12x + 2y greater than the sum of -18x + 6y and 5x - 25...

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  10. By which congruency criterion, DeltaQPR ~= Delta QPS, if QR = QS, PR |...

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  11. Which of the following statements is CORRECT ?

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  12. Study the given figure (not drawn to scale) carefully and select the c...

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  13. If a : b = 2(1)/(2) : 1(2)/(3) and b : c = 1(1)/(4): 3(1)/(2), then fi...

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  14. Solve for x : (7x + 3)/(4) + (9x-5)/(8) = (16x-3)/(16)

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  15. What is the least number of squares that must be added so that the lin...

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  16. The sum of two consecutive multiples of 6 is 114 . Find the smaller nu...

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  17. A sum of money at simple interest doubles itself in 5 years 6 months ....

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  18. Find the mean of first 7 odd natural numbers.

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  19. Which of the following figures is the top view of the given figure ?

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  20. What is the order of rotational symmetry of the given figure ?

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  21. A bag contains 5 blue gems, 8 red gems and 2 green gems . A gem is dra...

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