If a tree flowers thrice in a year (October, January and july) in nothern india, it is said to be

If a tree, flowers thrice in a year (Oct., Jan. and July) in Northern India, it is said to be

Rajeev earns 3/2 times in january,April,july and october than his average earning of ₹600 per month in the rest of the months therefore his saving in the month of january april july and october is 5/4 times of the monthly savings of ₹400 for each of the remaoining months of the year.The average expenditure of the month is:

Find the similarity among the following: July, October, January, June