MCQ
The fourth proportional to 3,5 and 21 is
- ✓35
- B$\frac{7}{5}$
- C$\frac{5}{7}$
- D12.6
✓
Answer
Correct option: A.
35
A
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
How many perfect squares lie between 120 and 300 ?
The prices of a scooter and a moped are in the ratio $9: 5$. If a scooter costs $₹ 6800$ more than a moped, the price of a scooter is :
→The volume of a cube is 2744 cu.cm. Its surface area is
Cube of $\left(\frac{-3}{7}\right)$ is
→For aiming at a target, a person gets one rupee each time when he hits it and loses one rupee when he misses it. If he gets ₹ 30 after aiming at the target one hundred times, then how many times did he miss the target?
In which of the following solids, none of the faces is triangular?
Given that $\sqrt{1521}=39$, the value of $\sqrt{0.1521}+\sqrt{15.21}$ is
→In the figure, ABCD is a rhombus. Two adjacent angles of the rhombus are:
The perimeter of one face of a cube is 40 cm. The volume of the cube (in $cm ^3$) is
→The smallest number by which $162$ should be multiplied to make it a perfect square is
→