Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
7,21
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
6,21
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
21,9
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A 21,7 Starting from the top of factor tree, we find factors of 42 and 21.
42 = 2x21
21=3x7
Hence, the empty boxes will be filled with 21 and 7.