Download App

Arithmetic Progressions — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSArithmetic Progressions3 Marks
Question
Find the A.M. between: 7 and 13
✓

Answer

7 and 13 Let A be the arithem atic mean of 7 and 13 Then, 7, A, 13 are in A.P $\Rightarrow\text{A}-7=13-\text{A}$ $\Rightarrow\text{A}=\frac{13-7}{2}=10$ $\therefore\text{A.M is 10}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "(Each question 3 marks)" from Arithmetic Progressions→Arithmetic Progressions — all question types→MATHS STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

If P(5, r) = P(6, r - 1), find r
→
Differentiate the following from first principle:$\text{e}^{\text{3x}}$
→
Find the conjugates of the following complex numbers: $\frac{1}{1+\text{i}}$
→
If $\frac{1}{\text{a}+\text{b}},\frac{1}{2\text{b}},\frac{1}{\text{b}+\text{c}}$ are three consecutive terms ofan A.P., prove that a, b, c are the three consecutive terms of a G.P.
→
Find the value of tan $\frac { \pi } { 8 }$.
→
A carpenter was hired to build 192 window frames. The first day he made five frames and each day thereafter he made two more frames than he made the day before. How many days did it take him to finish the job?
→
The vertices of $\Delta PQR$, are P(2, 1), Q(-2, 3) and R (4, 5). Find equation of the median through the vertex R.
→
If a, b, c are in G.P., prove that: $\text{a}(\text{b}^2+\text{c}^2)=\text{c}(\text{a}^2+\text{b}^2)$
→
Prove that: $\frac{\cos11^\circ+\sin11^\circ}{\cos11^\circ-\sin11^\circ}=\tan56^\circ$$ $
→
A bag contains tickets numbered from 1 to 20. Two tickets are drawn. Find the probability that (i) both the tickets have prime numbers on them (ii) on one there is a prime number and on the other there is a multiple of 4.
→