In a row of boys ,if A who is tenth from the left and B who is ninth from the right interchange their positions,A becomes fifteenth from the left.How many boys are there in the row?
option
1)23
2)27
3)28
4)31

• ans:1
  15+8=23
• 8 years agoHelpfull: Yes(7) No(2)
• Interchange means swap ,SO A will go to B's posn and B will go A's position
  So after B there are 8 persons are there
  Now A's is position is 15 ,so 15+8=23= total no. of boys
• 7 years agoHelpfull: Yes(2) No(0)
• 23
  9+15-1
  from left position is 15, then from right position is 9 ,so no of boys is 23
• 5 years agoHelpfull: Yes(1) No(0)
• The answer will be 23.
• 6 years agoHelpfull: Yes(0) No(0)
• 23 is the ans
• 3 years agoHelpfull: Yes(0) No(0)