Question
Complete the missing entries in the following factor tree.
✓
Answer
We need to fill the values for a and b in the following factor tree:
It is clear from the factor tree above that b = 3 × 7 b = 21 Also, a = 2 × b a = 2 × 21 a = 42 Thus, the missing entries are 21 and 42.
It is clear from the factor tree above that b = 3 × 7 b = 21 Also, a = 2 × b a = 2 × 21 a = 42 Thus, the missing entries are 21 and 42.
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
The following are the roots of $3x^2 + 2x - 1 = 0?$
$\frac{1}3{}$
→$\frac{1}3{}$
An umbrella has 8 ribs which are equally spaced (see figure). Assuming umbrella to be a flat circle of radius 45 cm, Find the area between the two consecutive ribs of the umbrella.
Prove the following:
$\sin\theta\sin(90^\circ-\theta)-\cos\theta\cos(90^\circ-\theta)=0$
→$\sin\theta\sin(90^\circ-\theta)-\cos\theta\cos(90^\circ-\theta)=0$
Two different dice are tossed together. Find the probability
$(i)$ That the number on each die is even.
$(ii)$ That the sum of numbers appearing on the two dice is $5 .$
→$(i)$ That the number on each die is even.
$(ii)$ That the sum of numbers appearing on the two dice is $5 .$
In the given figure, $\frac{A O}{O C}=\frac{B O}{O D}=\frac{1}{2}$ and AB = 4 cm. Find the value of DC.
→In the given figure $ XY \| BC$. Find the length of $XY$.
→Evaluate the following:
$\frac{\sin19^\circ}{\cos71^\circ}$
→$\frac{\sin19^\circ}{\cos71^\circ}$
On which axis do the following points lie?
Q(0, -2).
Q(0, -2).
In the given figure, PA and PB are the tangents to a circle with centre O. Show that the points A, O, B, P are concyclic.
The volume of a right circular cylinder with its height equal to the radius is$25\frac{1}{7}\text{cm}^3$ Find the height of the cylinder.
→