How many three digit numbers can be formed from the digits 5, 7, 4, 3, 8 without repetition ?
1). 10
2). 30
3). 50
4). 60
2. Which of the following preventive measures is adopted to avoid mental retardation?
3. The pigment that protect plants from harmful effect of ultraviolet rays ts
5. मैसूर
7. Which of the following statements about counselling Is not correct?