practise makes man perfect

Area of 4 wall

1,11,111, 1111, 11111

1, 22, 333, 4444, 55555

1, 12, 123, 1234, 12345

5, 10 , 15 , 20 ....upto 10th term

1, 4 , 9 , 16 ....upto 10 th term

1, 1 , 2, 3, 5,8.....uoto 10th term

Multiplication

Factorial

Factors