3120,?, 122, 23, 4

As per above given series , we can see that Descending order of given series - Next term = ( 5 x previous term ) + odd number ( which starts 3 ) Here , 5th term = 44th term = 5 × 5th term + 3 ⇒ 4th term = 5 × 4 + 3 = 233rd term= 5 × 4th term + 7 ⇒ 3rd term= 5 × 23 + 7 = 122Similarly , we can find all others terms also. 2nd term = 5 × 3rd term + 11 ⇒ 2nd term = 5 × 122 + 11 = ? ⇒ ? = 6211st term = 5 × 2nd term + 15 ⇒ 1st term = 5 × 621 + 15 =3120