6. | 1, 4, 9, 16, 23, 25, 36 | |||||||

Each of the numbers except 23, is perfect square. |

7. | 1, 4, 9, 16, 20, 36, 49 | |||||||

The pattern is 1 |

8. | 2, 5, 10, 17, 26, 37, 50, 64 | |||||||

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1 But, 64 is out of pattern. |

9. | 10, 14, 16, 18, 21, 24, 26 | |||||||

Each of the numbers except 21 is an even number. |

10. | 16, 25, 36, 72, 144, 196, 225 | |||||||

Each of the numbers except 72 is a perfect square. |