What are Major and Minor Intervals and the Equivalent Measurement of each Intervals

These are parts of basic music concepts. You will have to learn the major and minor intervals and each measure from do-re and so on because it is very important in your listening skills to get the right note. Like if you are not in perfect pitch, as long as you can memorize or identify the measures of each interval you will make it easy to know the exact note. To practice this, you'll have to play the note in your piano like for instance, do-me what kind of intervals and how many measures is from do-me? These pictures below are major and minor intervals and the equivalent measurements.

To clarify the intervals and the measurements: M2- 1, M3- 2, P4- 2.5, P5- 3.5, M6- 4.5, M7- 5.5, P8- 6

Minor intervals and the equivalent measurements m2- .5, m3- 1.5, P4- 2.5, P5- 3.5, m6- 4, m7- 5, P8- 6

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Let's try to answer the in first given note re, find the M3;

First step: count 1-2-3 it means major 3 from note re-me-fa
Second step: then fa is your M3.Are you sure?
Third step: To confirm if fa is exactly M3, you have to use the equivalent measurement of the M3- 2
Fourth step: Re-fa is not M3 because it only measures 1.5 but you need to have 2 measures to get the M3.
Fifth step: In order to get the M3 you have to put sharp to fa to make it fa# so that it can be M3 the answer is Re-Fa#.
Six step: To get the 2measure of M3, you can use the chromatic scale which is called semitone or halftone like this do-do#-re-re#-mi-fa-fa#-sol-sol#-la-la#-ci-do.
Seven step: To use the chromatic scales for the measurement of intervals start to counts re# not the given re. try to add the re#semitone to fa#semitone it will give a result to M3-2 wholetone.

I hope you can understand this basic music concepts. But remember before you go through the advance, you must learn first the basic. Good luck to everyone.!