Question

3. If 'abcd is a 4-digit number which equals al x c“, find a, b and c. ab 4. ​

Answer 1

Step-by-step explanation:

Correct option is

C

24

N=abcd

(i)4000≤N<6000

⇒a=4ar5

(ii)3≤ln<c≤6

⇒b=3,c=4,5,6

b=4,c=5,6

b=5,c=6

(iii) d=0, or 5

Total =2×2×(3+2+1)

=24