15
Find the wrong number in the given series.
445, 221, 109, 46, 25, 11, 4
445, 221, 109, 46, 25, 11, 4
- A25
- B46
- C109
- D221
Answer not set
Discussion 1
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CCommunity
The pattern followed is:
445 – 3 = 442; 442 ÷ 2 = 221
221 – 3 = 218; 218 ÷ 2 = 109
109 – 3 = 106; 106 ÷ 2 = 53
53 – 3 = 50; 50 ÷ 2 = 25
25 – 3 = 22; 22 ÷ 2 = 11
11 – 3 = 8; 8 ÷ 2 = 4
Thus there must be 53 instead of 46.
Thus 46 is the wrong number.
445 – 3 = 442; 442 ÷ 2 = 221
221 – 3 = 218; 218 ÷ 2 = 109
109 – 3 = 106; 106 ÷ 2 = 53
53 – 3 = 50; 50 ÷ 2 = 25
25 – 3 = 22; 22 ÷ 2 = 11
11 – 3 = 8; 8 ÷ 2 = 4
Thus there must be 53 instead of 46.
Thus 46 is the wrong number.