Question
Which of the following fractions is a terminating
decimal?Solution
Concept -we need to check if the denominator (after simplification) contains only the prime factors 2 and/or 5. A fraction has a terminating decimal if and only if, in its simplest form, the denominator has no prime factors other According to the option- =5/8 The denominator 8 can be factored into 23. Since it contains only the prime factor. 5/8 is a terminating decimal.
252, 235, 220, 207, 196, ?
53 × 38 + 32 × âˆ›54872 = ?
152    142    122   ?     52    2
32, 52, 82, 124, 180, ?
124, 107, 91, ? , 62, 49
In each of the following number series, one term is missing. Find the missing term.
2, 6, 18, 54, 162, ?
15, 31, 67, 131, ?, 375
58   83   133   ?    308    433
99, 101, 107, 131, 251, ?
32   33    29   38    ?      47    11
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