#tmkoc Paheli 26 - what different in this picture? rddles and puzzles for IQ test Paheli #shorts

Two circles have radius 5 and 26. The smaller circle passes through centre of the larger one. What is the difference between the lengths of the longest and shortest chords of the larger circle that are tangent to the smaller circle?

Paheli and Boojho have to cover different distances to reach their school but they take the same time to reach the school. What can you say about their speed?

It was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?

The short-wavelength limit shifts by 26 pm when the operating voltage in an X-ray tube is increased to 1.5 times the original value. What was the original value of the operating voltage?

The diagram gives the number of candidates who failed in Chemistry, Electronics and English in different tests. The total number of candidates appeared was 600. What is the percentage of candidates who failed in at least two subject?

Study the following graph and answer the questions that follows:- Number of appeared candidates and passed Candidates (in hundreds) in a test from six different institutions. What is the average number of candidates passed from all the institutions together?