Structured preparation for SBI, IBPS & RRB exams — from basics to selection 👊
including RBI Grade B Phase I
+
10,000+ students selected through Infinitesimal
Our Achievers
Real students. Real results. Your name is next.
Every course built with one goal — your name on the final merit list.
Live classes, recordings, practice sets, doubt sessions, and community — everything you need to crack banking exams in 2026. One enrollment. One goal.
Hi there! I'm Rajan Jha — Mechanical & Automation Engineer from GGSIPU, and a teacher at heart since 8th grade. I scored 100/100 in Engineering Maths, cleared NDA, GATE, IBPS Clerk & PO Mains, and briefly worked as a banker at Canara Bank before choosing my true calling — teaching.
In January 2017, I founded Infinitesimal. Since then, every student who has cracked their exam has made this journey more meaningful. Seeing my students achieve what they once thought impossible — that's the fuel that keeps me going every single day.
Hover over each to discover what makes us different.
A great mentor doesn't just teach — they make the impossible feel possible. Rajan Sir is known for breaking down the most complex problems into simple, logical steps. Doubts are never left unanswered. Whether it's a concept you've struggled with for months or a last-minute exam query, you will always be heard and helped. That personal connect is what makes Infinitesimal unlike any other coaching.
We don't believe in dragging one topic across 10 classes just to fill up hours. Every class is structured, relevant, and concise. The curriculum is designed to give you exactly what the exam demands — no filler, no fluff. From basics to advanced Mains-level concepts, every minute you spend in class counts. Quality and not Quantity has been the goal since Day 1 of Infinitesimal.
You become who you study with. At Infinitesimal, you're surrounded by serious, driven, and motivated students from across India. The community keeps you accountable, competitive, and consistently improving. When you see peers cracking SBI PO, RBI, IBPS PO one after another — your own belief system changes. That's the real power of this community.
All live classes are built on one non-negotiable philosophy — every moment counts. Here for free gyaan like YouTube? Better stay away. Padhne aaye ho? Swagatam! We don't waste your time, and we expect the same from you. This mutual respect for time is what creates an environment where real learning, real results, and real selections happen — batch after batch.
The Infinitesimal method is a proven 3-step cycle — attend the live class → revise your notes → solve pattern-based practice sets. The practice sets incorporate multiple concepts in one question for deeper learning. This is exactly why our students score 150+ in SBI PO Mains and 48/60 in IBPS PO Quant — it's not luck, it's the method.
Our students — not one but many — have scored 150+ in SBI PO Mains. 48/60 in Quant of IBPS PO Mains is seen here regularly. Selections in SBI PO, RBI Grade B, IBPS PO, RRB PO keep coming in batch after batch. Just change your approach, and see the magic. 1,00,000+ students have chosen Infinitesimal — and the results speak louder than any marketing.
Background doesn't matter. Determination does.
Just finished college? Start from zero, reach selection.
Gave attempts, didn't crack it? Change approach — not your dream.
Job se bore? Banking is your way out. Flexible recorded classes.
Prelims done. Now crush Mains with MPower & Quant Mastery.
Live classes at 11:00 AM daily. Catch up on latest videos anytime.
10,000+ students already did it. Your achiever card is waiting. Bas ek decision ki baat hai.
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