The first term of an A.P is 7, the last term is 70, and the sum is 385. Find the number of terms and the common difference.

University of Ilorin MTH101 kadesh past question

1. n = 10 and d = 7
2. n = 7 and d = 10
3. n = -7 and d = 10
4. n = 7 and d = -10

Register free to see the answer and step-by-step explanation

More University of Ilorin MTH101 kadesh past questions

Related questions

• The first term of an A.P is 7, the last term is 70, and the sum of terms is 385. Find the number of terms.
• The first four terms of a G.P series are 2 and 2048 respectively. The sum of the series is 1024. Find the number of terms.
• Find the Arithmetic mean of 4 and 18.
• Insert three A.M between 19 and 35.
• T2 of a G.P is 35 and the T4 is 875. Find the first term \( a \).
• Find the sum of the first 10 terms of the G.P \( \frac{1}{8}, \frac{1}{4}, \frac{1}{2}, \dots \).