Please solve this. i need help

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Pls brainliest will be awarded if answer is correct

Which of the following are arithmetic sequences? check all that apply. a. 0.3, 0.6, 0.9, 1.2, 1.5, b. 2, 3, 6, 11, 18, c. 150, 147, 144, 142, d. 2, 4, 9, 16, 25,