Question

20 * 4 = 10
30 * 13 = 12
10 * 12 = 3
40 * 11 = ?
With explanation plz

Answer 1

Answer:

20 * 4 = 10

30 * 13 = 12

10 * 12 = 3

40 * 11 = ?

With explanation plz

Answer 2

Answer:

X1 + X2 = X1( X2 +k), where k is the term of A.P : 1,2,3,4,5…( or the sequence no. of question)

1. 2+3= 2(3+1)=8
2. 3+7= 3(7+2)=27
3. 4+5=4(5+3)=32
4. 5+8=5(8+4)= 60
5. 6+7=6(7+5)= 72

And thus:

6. 7+8=7(8+6)= 98