What is the highest possible value of 'n' for which 3^1024 – 1 is divisible by 2^n?
a)13
b)10
c)11
d)12
Please share the approach
How can we find the roots of something like x^4+2x^3+3x^2+4x+2=50
Is there any approach or formula ?
The HCF of a , b and c is 8.
a-b= b-c =8 and LCM of a,b,c is a 4 digit number , then what is the maximum value of C ?
👍
1)14. 72 cm 2)15.81 cm 3)12.21 cm 4)13.42 cm
A contractor agreed to finish a piece of work in 150 days. He employed 75 men and made them work
for 8 hours per day. However, after 90 days, he realized that only 2/7th of the work was completed.
How many more men would he need to employ to complete the work on time if he intended to make
everybody work for 10 hours per day henceforth?
(a) 75 (b) 100 (c) 150 (d) 225
3 trains leave a station at an interval of half an hour. The third train after traveling for 1 hour meets the second train but this was after half an hour after it meets the 1st train. Calculate the relative speed of the 2nd train to the 1st if he distance between these meeting points is 30 km.
0 answers 3) 25
—
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Distance between two points p and q is 1200 m . car A starts from P and travels on a straight line at a speed of 15m/s to reach q . Then it reverses its direction immediately to travel back to P . if car B starts from P towards Q , four seconds later than car A at a speed of 10m/s , what distance from Q will these two cars meet ?
Pretty much easy ..............still i'm not getting the right ans 😛
- 936
- 209
- 264
- 991
0 voters
The minimum value of 13 + | x - 4 | is
9
17
11
13
approach please
A set of S consists of i). All odd numbers from 1 to 55.ii). All even numbers from 56 to 150.What is the index of the highest power of 3 in the product of all the elements of the set S?
A.35
B.48
C.6
D.36
A, B and C starts running simultaneously from point P, Q and R respectively on a circular track. The distance between any two of the three points P, Q and R is L and the ratio of the speeds of A, B and C are 1:2:3. If A and B run in opposite directions while B and C run in the same direction, what is the distance run by A before A, B and C meet for the 3rd time?
A)10L
B)will never meet
C)40L/3
D)12L
E)none of these
PLEASE REPLY WITH GOOD EXPLANATION FOR THE ANSWER.
In how many ways can 72 be written as a product of 3 positive integers?
1.16
2.12
3.10
The radius of the cross-sections of pipes P1 and P2 are 7 m and 14 m respectively. Waterflowsthrough P1 at a constant rate of 10 m/s and it can alone fill a tank in 2 hours. If P1 is used as the inlet pipe and P2 as the outlet pipe then together they fill the tank in 4 hours. What is the rate of water flow (in m/s) through P2 ?
(a) 1.00 (b) 1.25 (c) 1.50 (d) 2.00
A clock is set to show the correct time at 10 a.m .The clock loses 12 min in a day.What will be the appropriate time when the watch indicates 5 p.m on the next day...
1.4:35 2)4:55 3)4:45 4)4:50
My doubt is if the clock is loosing time means its going slow...so jab 5 baje honge to actual time to 5 se jyada raha hoga na :/😠😠😠😠😠
X and Y run a race of 2000 mts. First X give Y a start of 200 mts and beats him by 30 sec. Next, X give Y a start of 3 min and is beaten by 1000 mts. Find the time in minutes in which X and Y can run the race completely.
Please share the approach. I find TS&D; and specially "race" problems little tough.
Also, tell the level of this question E/M/D or VD and approx. time taken by you to solve. Too much too ask but i think these are also as imp. as getting the question right!! 😃
##Total number of integral solutions of |x|+|y|+|z|=15
##Total number of integral solutions of |X|+|Y|+|Z|=15
An article was marked at a certain percentage above the cost price. It is then sold for a profit after offering a discount. The sum of the profit and the discount equals the sum of its cost price and the difference of twice its marked price and thrice its cost price. Find the mark up percentage.
50%
100%
75%
662/3%
A person purchases 90 clocks and sells 40 clocks at a gain of 10% and 50 clocks at a gain of 20%. Had he sold all of
them at a uniform profit of 15%, he would have got Rs 40 less. Find the CP of each clock.
1) Rs 78 2) Rs 79 3) Rs 81 4) Rs 80 5) None of these
steps ?
In a competitive examination there are 4 subjects. The maximum marks of all the subjects are same. The ratio of marks of a
student in different subject is 3 : 4 : 6 : 7. If he gets 60% marks in all. Find out the number of subject in which he gets more
than 50% marks.
1) Two 2) three 3) four 4) one 5) None of these
In a competitive examination there are 4 subjects. The maximum marks of all the subjects are same. The ratio of marks of a
student in different subject is 3 : 4 : 6 : 7. If he gets 60% marks in all. Find out the number of subject in which he gets more
than 50% marks.
1) Two 2) three 3) four 4) one 5) None of these