If sin2A = 2sinA. Find A
Sin2A = 2SinA 2SinA Cos A = 2SinA 2SinA(Cos A-1) = 0 Sin A =0 or Cos A =1 A... View Article
Latest Posts
A year starting with Monday and ending with Tuesday. How many days are there from 16th January to 15th march of that year?
Answer: A normal year starts and ends at the same day. The leap year, on the other hand, will always begin... View Article
What are integral roots?
The numbers which satisfy the value of a polynomial are called its roots .The roots which are integers i.e not... View Article
4 Bells toll together at 9:00 A.M. They toll after 7, 8, 11, and 12 seconds respectively. How many times will they toll together again in the next 3 times?
Answer: 5 times From given, we have, 9:00 AM + LCM ( 7, 8, 11 & 12 ) ⇒ 9:00... View Article
Find the greatest number of 6 digits exactly divisible by 24, 15 and 36.
Answer: In arithmetic, Least common multiple or LCM (a,b) is the least common multiple of two numbers, a and b. And... View Article
Complete the series 4, 5, 12, 39, 160,…?
4 * 1 + 1 = 5 5 * 2 + 2 = 12 12 * 3 + 3 =... View Article
How many whole numbers are there between 1032 and 1209?
The number of numbers presents between two numbers a, b is b – a – 1. To find the whole... View Article
Two circles touch externally. The sum of their areas is 130π sq.cm and the distance between their centres is 14 cm. Find the radii of the circles.
We can take r1 and r2 be the Radii of the two circles having centres A & B. Given that... View Article
Find the cube root of 13824 by the prime factorization method
After resolving the prime factors, we get 13824 = 2 x 2 x 2 x 2 x 2 x 2... View Article
How many multiples of 4 lie between 10 and 205?
We have to find the multiples of 4 lie between 10 and 205 are, 12, 16, 20,……204 Which is an... View Article
What is the additive inverse of 2/8?
Answer: An additive inverse of a number is defined as the value, which on adding with the original number results in zero... View Article
If 3/5 of a number exceeds its 2/7 by 44, find the number.
Let the number is x. Then by the given question, x × 3/5 = x × 2/7 + 44 or,... View Article
In a scheme, a pack of three soaps with MRP Rs.45 is available for Rs.42. If it still gives a profit of 5% to the shopkeeper, then the cost price of the pack is?
Applying the equation, Selling price – Cost price = Profit Selling price = Rupees 42.00 Cost price = x Profit... View Article
Martha was supposed to multiply the number of cans sold with the price of one can to ascertain the amount. Instead of taking 41 as the number of cans, she wrote 14 by mistake. As a result, the product went down by 135. What is the other multiplier?
As per the question given Martha was supposed to multiply the number of cans sold with the price of one... View Article
A baby crawls 8 feet towards the west and then 8 feet towards the north. It then moves 14 feet towards the east. How far and in which direction is the baby from the starting point?
A baby crawls 8 feet towards and turns towards north. Finally, he turns 14 feet towards east From the triangle,... View Article
Walking 6/7th of his usual speed, a man is 12 minutes too late. What is the usual time taken by him to cover that distance?
It is given that walking 6/7th of his usual speed, a man is 12 minutes too late. The usual time... View Article
Find the irrational number between 2 and 2.5
Answer: An irrational number is a real number that can not be expressed as an integer ratio, such as √2,... View Article
1 metric ton is equal to a) 100 quintals b) 10 quintals c) 1/10 quintals d) 1/100 quintals
Metric ton is a unit of weight and is equal to 1000 kg. This unoit is used for geavy objects... View Article
If the HCF of 657 and 963 is expressible in the form 657x + 963x – 15 find x.
Using Euclid’s Division Lemma a= bq+r / Dividend= Divisor * Quotient + Remainder = 963 = 657×1+306 = 657 =... View Article
Define constant polynomial and give its degree
A polynomial that, when evaluated over each in the domain of definition , results in the same value is known... View Article
