On an average, the fat content in Cheddar cheese is:

15, 120, 840, 5040, ?, 100800

What will come in place of the question mark (?) in the following series?

77, 198, 342, 511, 707, ?

What will come in place of the question mark (?) in the following series?

81, 83, 87, 95, 111, ?

1221,      1100,      1000,      919,        ?

Find the missing term in the series:

2, 7, 22, 67, 202, ?

[(145)² ÷ 25 × 52] ÷ ? = 29 × 13

74, 84, 64, 104, ?, 184

114, 156, ?,  238, 274, 304

124, 128, ?, 135, 110, 146

45, ?, 84, 114, 151, 195