9. WA
10. What fraction of an hour is 45 minutes?
1. How many natural numbers are there from 87 to 97? What fraction of them are
prime numbers?
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Step-by-step explanation:
the angle bounded by two lines perpendicular to each other : an angle of 90° or ¹/₂ π radians
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Answer:
10. An hour (1 hour) = 60 minutes
∴ Requird fraction = 60/45
= 4/3
11. The natural numbers from 87to97 are 87,88,89,90,91,92,93,94,95,96and97.
Total number of natural number =11
Out of these, the prime numbers are 87and97
Total number of these prime numbers = 2
∴ Required fraction = 11/2
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