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The James Webb Space Telescope observes the infrared universe (statement 1). Chandrayaan-2’s lander crash-landed (statement 2 is incorrect). SpaceX sent astronauts to the ISS in 2020 (statement 3).
A, B and C invested in partnership. A invest Rs.9000 for 5 months, B invests Rs.7000 for 3 months and C invests Rs.12000 for 2 months. C is working part...
The sum of the first 10 terms of an arithmetic sequence is 60 and the 10th term is 5. What is the first term of the sequence?
Two different alloys contain steel and aluminum in the ratios of 11:4 and 2:13, respectively. In what proportion should these two alloys be combined to ...
The interest earned when a sum is invested at simple interest of 25% p.a., for 3 years, is Rs. 1875. What will be the total amount received after 2 year...
The data given below shows the marks obtained by 12 different students in an exam.
Marks obtained: 18, 22, 25, 28, 35, 39, 47, 50, 50, 64, 65, 85...
The interest earned when a sum is invested at simple interest of 20% p.a., for 3 years, is Rs. 3000. What will be the total amount received after 2 year...
The mean of 10 observations is 8. One more observation is added, and the new mean becomes 9. What is the value of the 11th observation?
Mean of a grouped data calculated using direct method, assumed mean method or step deviation method:
What is the median of the following list of numbers: 5, 3, 6, 9, 11, 19,12,20, and 1?
The marks obtained by 12 students out of a maximum of 30 in a test are given as 25, 28, 24, 22, 25, 18, 20, 22, 19, 23, 22, and 26. Find the sum of the ...