First four terms of the sequence are: O O O ○ ○ O 6 {ff, 5 14 9 n²+5 n 1+4 n 61 36 26' 14 { 14/1/2, 1/3, 26 6 61 36 3} 17 14 85 39 26 17 34} 36 ,36} 17 Onone of them 5' " 14 24 36 { 1, 1/2, 1/3, 1/70 144, 34}

What are the first five terms of the following sequence? a₁ = 25, an an-1-5 O 5, 10, 15, 20, 25 0 25.5.1/3-2/5 O 25, 20, 15, 10, 5 O 25, 30, 35, 40, 45

Find a formula for the terms an of the sequence {2, 4/3, 8/9, 16/27, 32/81,...}

The hexadecimal digits are as follows: 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F. How many different sequences of 5 hexadecimal digits are possible? A digit may repeat.