(6666....n digits)^2+ (88888........ n digits) ?
OA=(10^2n - 1)*4/9
explain soln
Pls help:
1. The equation 4x-Ay=B has a number of integral solutions. If HCF(A,4)=1, and the number of solutions (x,y) for 0
a) 3 b) 2 c)1 d) none of these
2. N=123123123.....300 digits. Find the remainder when N is divided by 504.
a) 35 b) 412 c) 1 d) none of these
3. For given pair (x,y) of positive integer, such that 3x-11y=1 and given that x can take maximum value of 1000, how many such pairs are possible?
a) 46 b) 71 c) 88 d) none of these
Is there any thread which deals with Logical Reasoning questions as I don't find enough of those questions here...?
If a-b varies directly with a+b,a^2-b^2 will vary directly with
a) a^2+b^2
b) ab
c)a^2+b^2+3ab
d)More than one of the above
A palindrome (a word which spells the same when seen from left to right or from right to left) is to be formed using the characters @, $ and #. How many such patterns of length 7 are possible?
A.6
B.243
C.81
D.2187
BC=2r is the diameter of a circle with AB as a tangent at point B and A-D-C. Find AC x CD = ?
- r2/2
- 4r2
- Cannot be determined
- r2/√3
0 voters
The index of the highest power of 3 that divides 101121314151617181920.............................6869.explain approch
The no. of solutions of a+b+c+d=20 .... where a>b ... Please explain the process.
PQR is a right-angled triangle as shown. The perpendicular PS meets RQ at S such that QS = 1cm. The point T lies on PQ and is 1 cm away from Q such that ∠TQR =∠TRQ. Find the length of PT in cm
Post the steps..
- 3^1/3 - 1
- 3^1/3 + 1
- 2^1/3 - 1
- 2^1/3 + 1
0 voters
if a man saves rs. 1000 each year and invests at the end of the year at 5% compound interest, how much will be amount at the end of 15 years? pls explain the approach
Some ppl are standing at distinct pts on a circle,all facing towards the centre .Each possible pair who are not adjacent sing a three minute song,one pair after other.If the total time taken by all the pairs to finish singing is 1 hour,find the number of people standing on the circle
1) 8
2) 9
3) 10
4) 11 Skip
post sol plzzzz—
Maximum no. Of squares possible that can be constructed using 31 pencils of equal length on the table ?
Some ppl are standing at distinct pts on a circle,all facing towards the centre .Each possible pair who are not adjacent sing a three minute song,one pair after other.If the total time taken by all the pairs to finish singing is 1 hour,find the number of people standing on the circle
1) 8
2) 9
3) 10
4) 11 Skip
—
60/3=20 = total no. of pairs
first person can make 5 pairs
second 5
third 4
fourth 3
fifth 2
sixth 1
5+5+4+3+2+1=20
if x and y are even integers then number of solutions of
x^2-y^2=7389746232
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A trader gives successive discounts of 25% and 15% on a marked price of 8000. He had to
give another discount of 2% of cost price on the current selling price and finally achieves a no
profit no loss. What is the cost price?
-@ASix people have an average amounts of 40. If all are having distinct positive integral
amounts then what can be the second highest amount that any person can have...?
-@A
The HCF of three numbers a, b and c is 7. If their sum is 63 then find the number of
ordered triplets of a, b and c.
-@A
A right circular cylinder vessel having height 20 cm and inner diameter 10 cm is filled with
water upto 15 cm of its height as measured from the base. Find the angle by which the cylinder
needs to be tilted so that the water in the cylinder is just about to fall out...?
-@A
Sohan can work for three hours non-stop but then needs to rest for half an hour. His wife can work for two hours but rests for 15 min after that, while his son can work for 1 hour before resting for half an hour. If a work takes 50 man-hours to get completed, then approximately how long will it take for the three to complete the same? Assume all of them all equally skilled in their work. (a) 15 (b) 17 (c) 20 (d) 24