If a=√2+1 and b= 1/√2+1 then the value of a3-b3/a2+b2+ab
Given that a= √2+1 and b= 1
√2+1
a3-b3= (a-b) (a2+ab+b2)
a3-b3/a2+b2+ab = (a-b)
a3-b3/a2+b2+ab = √2+1-1/√2+1
(√2+1)2-1/√2+1
2+2√2+1-1/√2+1
3-1+2√2/√2+1
2+2√2/√2+1
2(1+√2)/1+√2 =2
Find the number if it is decreased by 25½% gives 153:
The average of odd numbers up to 50 is:
1+3+5+7+9+10+13+15+17+19+21+23+25+27+29+31+33+35+37+39+41+43+45+47+49
25
=25
A hall 25 meter long and 15meter broad is surrounded by a veranda of uniform width of 2.5 meter. The cost of flooring the veranda at the rate of Rs. 4.00 per square meter is:
A car is moving with a speed of 72Km/hr. How many meters will it cover in 15 minutes?
Speed = Distance/Time
Distance = speed × time
= 72×5/18×15×60
=20×15×60
=300×60
=18000
A man sold an article for Rs. 450 at a loss of 10%. At what price should it be sold to earn a profit of 10%.
let the original price = 450/9 × 100
= 500
To earn a profit of 10%, the price be = 500/100 × 100
= 550 RS.
The total number of prime factors in 620×1615×2112 are:
correct answer is 112
Arjun completes a work in 35 days where as Biju completes the same work in 45 days. If they complete it, together and get a payment of Rs. 3200. What is Biju’s share?
At simple interest, in how many years will a sum of money double itself at 12% per annum?
The ratio of milk and water in a mixture is 4:3. If 14 liters of water is added to the mixture, the ratio of milk and water become 3:4. Then the quantity of milk in the mixture is.
If + means ÷, -means ×, ÷means + and ×means –, then 36×12+4÷6+2-3 =?
36-12÷4+6÷2×3
36-3+9=33+9
=42
A father is twice as old as his son 20 years ago, the age of the father was 12 times the age of the son. The present age of the son is.
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Choose the correct alternative : Dog : Bark :: Goat : ?
Arrange the given words in a meaningful sequence.
(i) District (ii) village (iii) State (iv) Town
Choose out the odd one:
Which is the number that is equal to the cube of the sum of its digits ?
A man goes 10m due north and then 30m due east. His distance from the starting place is:
Distance = √302+102
= √900+100
=√1000
=10√10 m
A train 110m in length runs through a station at the rate of 36km per hour. How long will it take to pass a given point?
Time = Distance / Speed
= 110/36×5/18
= 110/10
= 11 Sec.
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Monthly published by Vaikam Abdul Khadir Maulavi:
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In India money bills can be introduced in
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Everyone stood up_________
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“raju finished his work and then he left home”
Select the apt passive form of
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താഴെപ്പറയുന്നവയിൽവിശേഷണപദംഏത്?
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പണി + പുര = പണിപ്പുര. ഏത് സന്ധി
; ഈ ചിഹ്നത്തിന്റെപേരെന്ത്?
പ്രതിഗ്രാഹികവിഭക്തിക്ക്ഉദാഹരണമാണ്
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खाक छानना मुहावरे शब्द का प्रयोग किस अर्थ में होते है?
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1 MB stands for
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