Question
Which of the following pairs is NOT
coprime?Solution
ATQ,
Two numbers are coprime if their greatest common divisor (GCD) is 1, i.e., they have no common factors other than 1. Check each pair: (17, 34) → GCD = 17 ❌ Not coprime (11, 13) → GCD = 1 ✅ (15, 17) → GCD = 1 ✅ (17, 23) → GCD = 1 ✅
32, 16, 24, 60, 207, 945
80, 88, 101, 122, 150, 185
2, 10, 30, 64, 130, 222
- Find the wrong number in the series.
1, 8, 27, 65, 125, 216, 343 74, 79, 86.5, 101.5, 109, 124, 141.5
62, 79, 98, 119, 142, 165
In each of the following giving number series, a wrong number is given. Find out the wrong number?
82, 81, 86, 110, 168, 287
54 54 108 39 144 28.8
Find the wrong number in the given number series.
2, 4, 12, 48, 120, 1440
127, 137, 148, 164, 169, 185, 199