Approach?
2 circles have their centers 21 cm apart. the radii of the circles are 10cm and 17cm. find the length of the common chord.
can anyone tell me the generalized formula or any other simple approach to solve this question.
Soln
62,63,65 please
Q.10
Question no. 35. Please share the approach as well.
There are 25 points on a plane of which 7 are Collinear. How many quadrilaterals can be formed from these points?
How to compare these ratios?
#numbers
How many integers between 100 to 2015 when tripled have no even digits? Approach please.
Find the 50th term of the series 1+3+7+13+21+......... Please explain the approach
- 2341
- 2561
- 2451
- 2781
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2500 students gave an examination comprising five questions. Each question had five answer choices, of which only one was correct. The marking scheme was +4/−1 for every correct/incorrect answer. Each student attempted all the questions. If the overall answer key of no two students was the same, what is the minimum number of students with a positive score?
Explanation needed.
#functions
Tsd help!!
Ans is only one that is x=-13. But what about x=6? Taking x=6 its gonna be 0^0. Isnt it 1?
In a class of 70 students 60% of those who like tea also like coffee, and 60% of those who don't like tea also don't like coffee. How many students like only one of the two drinks?
Find remainder when 79! is divided by 83 ?
How many numbers are co-prime to 273 between 1000 to 2000 ?
Could not understand why they are taking 48 and not 49. Can someone explain?
Question 57-to-60 please .please share approach as well