A can do a piece of work in 6 days, B in 10 days and C in 15 days. They jointly complete the work and earn rs 300. Sum of their wages after 2 days is?
120
160
180
200
(b-c)/a + (a+c)/b + (a-b)/c =1
a not equal to (b+c)
then value of (1/b + 1/c)=?
Solve:
Find the other two zeros of the polynomial 2x^4-3x^3-2x^2+6x+2, if we know that two of its zeros are rt2 and -rt2.
- 1/2,1
- -rt2, 1
- rt2,-1
- -1, 1/2
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जाति देखकर वोट करने वालों, आपको "मतदान" करना है...."कन्यादान" नहीं
One of the tow student, while solving a quadratic equation in x, copied the constant term incorrectly and got the roots 3 & 2. The other copied the constant term and coefficient of x^2 correctly as -6 and 1 respectively. The correct roots are.
CGL 1999
Through which principle or device did Gandhiji strive to bridge economic inequalities
- Abolition of machinery
- Establishment of village industries
- Trusteeship theory
- NOTA
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CGL 2000
Commercially available nitric acid is coloured because it contains dissolved
- Oxygen
- Nitrous oxide
- Nitrogen dioxide
- Coloured impurities
0 voters
CGL 2000
CD is a data storage system of the type:
- Electromechanical
- Optical
- Magnetic
- Electrical
0 voters
CGL 2000
What was ultimate goal of MK Gandhi's Salt Satyagraha
- Repeal of Salt Satyagraha
- Economic relief to common people
- Purna Swaraj for India
- Curtailment of govt's power
0 voters
CGL 2000
The snow on the mountain doesn't melt all at once when it is heated by the sun becoz:
- It has high latent heat of fusion
- It becomes very hard
- It reflects most of the heat from the sun
- It has low specific heat capacity
0 voters
CGL 2000
AIDS virus has
- Single-stranded DNA
- Double stranded RNA
- Double stranded DNA
- Single-stranded RNA
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Find the sum of
1/2 + 1/6 + 1/12 + 1/20 + ................ + 1/156 + 1/182
Options: 12/13, 13/14, 14/13, 13/12
A dishonest businessman marks his good 20% above CP and gives a discount of 10%. Besides that he cheats about 100 grams per kilo both while selling and purchasing. Find the gain % ?
20, 25, 27.5 and 32
A sum of money is taken at the rate of 6% p.a. on SI. After one year, Rs. 6800 is paid as fine and the remaining money is paid with 5% of SI. If the interest paid in second year is 11/20 times the interest paid in first year, find the sum of money.
17000, 16800,16500 and 20000
Mohit takes certain some of money from a bank @ 10% p.a. CI. He clears his debt by paying two equal installments of Rs. 1000 each at the end of first and second year. Find the money he borrowed.
1852, 1736, 1694, 1792
A bag contains 25 paise, 50 paise and 1 Rs. coins. Total number of coins is 220 and total amount of money is Rs. 160. If the number of coins of Rs. 1 is thrice the number of coins of 25 paise. Find the number of 50 paise coins ?
60, 40, 120, 80
Please help me with this doubt in similar triangle.
Three labourers, working together can dig a pit 324m deep in 6 days. In one shift, third labour digs as many extra meters from second labour as second labour digs extra from third labour. Work done by the third labour in 10 days is equivalent to the work done by first labour in 14 days. How many meters does the first labour dig in one shift ??
15, 18, 21, 27