10. The simplified value of 1.2 + (1.2)2 + (1.2)3 is:
(a) 4.248
(b) 4.368
(c) 3.248
(d) 3.368

• 1.2+1.44+1.728
  (b)4.368
• 9 years agoHelpfull: Yes(2) No(1)
• The expression is in geometric progression with a common ratio of 1.2. Formula to sum a geometric sequence is a(1-r^n)/1-r where a=r=1.2.Solving it we get the ans as 4.368
• 8 years agoHelpfull: Yes(1) No(0)
• b. 4.368
  1.2(1+1.2+1.2^2)=1.2(1+1.2+1.44)=4.368
• 8 years agoHelpfull: Yes(1) No(0)
• 1.2+1.44+1.728=4.368
  
• 9 years agoHelpfull: Yes(0) No(0)
• 1.2 + 1.2^2 + 1.2^3
  1.2 + 1.44 + 1.728
  4.36
• 9 years agoHelpfull: Yes(0) No(0)
• 1.2+1.44+1.728=4.368
• 9 years agoHelpfull: Yes(0) No(0)
• 1.2+1.44+1.728=4.368
  so answer is 4.368
  option b)
• 9 years agoHelpfull: Yes(0) No(0)
• if there is loss of 12.5%
  how SP is more
  there fore ans is 8:7
  cp-sp=loss
  8-7=1
  1 is 12.5 % of 8
  that is CP 8
• 9 years agoHelpfull: Yes(0) No(4)
• 1.2+1.44+1.728=4.368
• 8 years agoHelpfull: Yes(0) No(0)