HCL Company Logical Reasoning Coding Decoding

How many integers n greater than and less than 100 are there such that,if the digits of n are reversed,
the resulting integer is n+9 ?
(A)5 (B)6 (C)7 (D)8 (E)9

Read Solution (Total 6)

(10x+y)=(10y+x)+9
=> 9x-9y=9
=> x-y=1

and only 8 numbers satisfy this condition and the numbers are 21,32,43,54,65,76,87,98
12 years agoHelpfull: Yes(46) No(5)

(10x+y)=(10y+x)+9
=> 9x-9y=9
=> x-y=1
12 years agoHelpfull: Yes(13) No(2)
89,78,67,56,45,34,23,12
Ans -8
13 years agoHelpfull: Yes(12) No(2)
ANS: D

The Numbers are
12, 23, 34, 45, 56, 67, 78 and 89
13 years agoHelpfull: Yes(4) No(1)
the answer is 9
the number is
01,12,23,34,45,56,67,78,89
12 years agoHelpfull: Yes(4) No(13)
i think 9 bcoz mulitiples of 9 assume n be 9 then mulitples of 9 upto 81
13 years agoHelpfull: Yes(0) No(13)

HCL Other Question

. A merchant sells an item at a 20 percent discount. but still makes a gross profit of 20 percent of the cost.
What percent of cost would be gross profit on the item have been if it had been sold without the discount?
(A)20% (B)40% (C)50% (D)60% (E)66.6%
An investor purchased a shares of stock at a certain price.If the stock increased in price Rs 0.25 per share
and the total increase for the x shares was Rs 12.50, how many shares of stock had been purchased ?
(A)25 (B)50 (C)75 (D)100 (E)125